ClipArt ETC
The ethmoid viewed from behind.

Ethmoid Viewed from Behind

The ethmoid viewed from behind.

The ethmoid viewed from right side.

Ethmoid Viewed from Side

The ethmoid viewed from right side.

Section showing nasal aspect of left lateral mass of ethmoid.

Section of the Ethmoid

Section showing nasal aspect of left lateral mass of ethmoid.

The ethmoid viewed from above.

Ethmoid Viewed from Above

The ethmoid viewed from above.

Shown is norma frontalis, which refers to the front of the skull. Labels: 1, mental protuberance; 2, body of lower jaw; 3, ramus of lower jaw; 4, anterior nasal spine; 5, canine fossa; 6, infraorbital canal; 7, malar canal; 8 orbital surface of superior maxilla; 9, temporal fossa; 10, os planum of ethmoid; 11, sphenoidal fissure; 12, lachrymal bone and groove; 13, optic foramen; 14, orbital foramina; 15, temporal ridge; 16, supraorbital notch; 17, glabella; 18, frontal eminence; 19, superciliary ridge; 20, parietal bone; 21, front-nasal suture; 22, pterion; 23, great wing of sphenoid; 24, orbital surface of great wing of sphenoid; 25, squamous temporal; 26, left nasal bone; 27, malar bone; 28, sphenomaxillary fissure; 29, zygomatic arch; 30, anterior nasal aperture, displaying nasal septum and inferior and middle turbinated bones; 31, mastoid process; 32, incisor fossa; 33, angle of jaw; 34, mental foramen; 35, symphysis.

Front of the Skull

Shown is norma frontalis, which refers to the front of the skull. Labels: 1, mental protuberance; 2,…

Shown is norma lateralis, which refers to the side of the skull. Labels: 1, mental foramen; 2, body of lower jaw; 3, superior maxillary; 4, ramus of lower jaw; 5, zygomatic arch; 6, styloid process; 7, external auditory meatus; 8, mastoid process; 9, asterion; 10, superior curved line of occipital bone; 11, external occipital protuberance; 12, lambdoid suture; 13, occipital bone; 14, lambda; 15, obelion placed between the two parietal foramina; 16, parietal bone; 17, lower temporal ridge; 18, upper temporal ridge; 19, squamous part of temporal bone; 20, bregma; 21, coronal suture; 22, stephanion; 23, frontal bone; 24, pterion; 25, temporal fossa; 26, great wing of sphenoid; 27, malar bone; 28, malar canal; 29, lachrymal bone; 30, nasal bone; 31, infraorbital canal; 32, anterior nasal aperture.

Side of the Skull

Shown is norma lateralis, which refers to the side of the skull. Labels: 1, mental foramen; 2, body…

Shown is norma basalis, which refers to the base of the cranium. Labels: 1, external occipital crest; 2, superior curved line of the occipital bone; 3, foramen magnum; 4, occipital condyle; 5, digastric groove; 6, mastoid process; 7, external auditory meatus; 8, styloid process; 9, glenoid fossa; 10, foramen spinosum; 11, sphenoidal spine; 12, foramen ovale; 13, external pterygoid plate; 14, hamular process of internal pterygoid plate; 15, nasal septum; 16, posterior nasal spine; 17, horizontal plate of palate bone; 18, palatal process of superior maxilla; 19, anterior palatine canal; 20, intermaxillary suture; 21, posterior palatine canal; 22, malar process of superior maxilla; 23, spheno-maxillary fissure; 24, zygomatic fossa; 25, zygomatic arch; 26, posterior openings of left nasal fossa; 27, pterygoid fossa; 28, scaphoid fossa; 29, foramen lacerum medium; 30, opening of osseous Eustachian canal; 31, carotid canal; 32, jugular fossa; 33, stylo-mastoid foramen; 34, jugular process of the occipital bone; 35, groove for occipital artery; 36, mastoid foramen; 37, posterior condylic foramen; 38, inferior curved line of occipital bone; 39, external occipital protuberance.

Base of the Skull

Shown is norma basalis, which refers to the base of the cranium. Labels: 1, external occipital crest;…

Shown is the base of the skull seen from above. Labels: 1, frontal bone; 2, slit for nasal nerve; 3, anterior ethmoidal foramen; 4, posterior ethmoidal foramen; 5, optic foramen; 6, foramen for internal carotid artery formed by anterior and middle clinoid processes; 7, lesser wing of sphenoid; 8, anterior clinoid process, in this case united on its inner side to the middle clinoid process; 9, posterior clinoid process; 10, foramen ovale; 11, groove for middle meningeal artery; 12, foramen spinosum; 13, Hiatus Fallopii; 14, line of petro-squamosal suture; 15, internal auditory meatus; 16, groove for superior petrosal sinus; 17, groove for sigmoid part of lateral sinus; 18, jugular foramen; 19, anterior condylic foramen; 20, groove for lateral sinus; 21, internal occipital protuberance; 22, ridge for attachment of falx cerebri; 23, fossa for the lodgment of the occipital lobe of the cerebrum; 24, ridge for attachment of the falx cerebelli; 25, fossa for the lodgment of the left cerebellar hemisphere; 26, foramen magnum; 27, groove for the sigmoid sinus turning into the jugular foramen; 28, groove for the inferior petrosal sinus running along the line of the suture between the petrous temporal and the basioccipital; 29, depression for the Gasserian ganglion; 30, middle cranial fossa for lodgment of temporal lobe of cerebrum; 31, foramen lacerum medium; 32, carotid groove; 33, dorsum sellae of sphenoid; 34, leads into foramen rotundum; 35, pituitary fossa; 36, olivary eminence of sphenoid; 37, anterior cranial fossa for lodgment of frontal lobes of cerebrum; 38, cribriform plate of ethmoid; 39, crista galli of ethmoid; 40, foramen caecum; 41, crest for attachment of falx cerebri.

Base of the Skull Seen From Above

Shown is the base of the skull seen from above. Labels: 1, frontal bone; 2, slit for nasal nerve; 3,…

Shown is the inner aspect of the left half of the skull sagittally divided. Labels: 1, suture between parietal and temporal bone; 2, remains of subarcuate fossa; 3, grooves for branches of the middle meningeal artery; 4, dorsum sellae; 5, pituitary fossa; 6, anterior clinoid fossa; 7, optic foramen; 8, sphenoidal suture; 9, nasal surface of superior turbinated bone; 10, cribriform plate of ethmoid; 11, nasal surface of middle turbinated bone; 12, frontal sinus; 13, nasal spine; 14, nasal bone; 15, nasal process of superior maxilla; 16, middle meatus of nose; 17, directed towards opening of antrum; 18, nasal surface of inferior turbinated bone; 19, inferior meatus of nose; 20, anterior nasal spine; 21, anterior palatine canal; 22, palatal process of superior maxilla; 23, palatal process of palate bone; 24, posterior nasal spine; 25, hamular process of internal pterygoid plate; 26, external pterygoid plate; 27, superior meatus of nose; 28,sphenopalatine foramen; 29, pterygospinous ligament almost completely ossified to enclose a foramen; 30, styloid process of temporal bone; 31, alar spine of sphenoid; 32, mastoid process; 33, basion (midpoint of posterior border of foramen magnum); 34, internal auditory meatus; 35, anterior condylic foramen; 36, leading into jugular foramen; 37, opisthion (midpoint of posterior border of foramen magnum); 38, groove for sigmoid sinus; 39, opening of mastoid foramen; 40, for lateral sinus and attachment of tentorium cerebelli; 41, fossa for lodgment of cerebellar hemisphere; 42, internal occipital protuberance.

Skull Seen From Side

Shown is the inner aspect of the left half of the skull sagittally divided. Labels: 1, suture between…

Shown is a coronal section passing inferiorly through interval between between the first and second molar teeth. Labels: 1, groove of superior longitudinal sinus; 2,crest for attachment of falx cerebri; 3, crista galli of ethmoid; 4, cristiform plate of ethmoid; 5, perpendicular plate of ethmoid, assisting in the formation of nasal septum; 6, lateral mass of ethmoid consisting of the ethmoidal cells; 7, os planum of ethmoid; 8, middle meatus of nose; 9, middle turbinated bone; 10, opening from the middle meatus; 11, orbital plate of superior maxilla; 12, frontomalar suture; 13, infraorbital groove; 14, antrum or maxillary sinus; 15, canal for anterior dental nerve and vessels exposed; 16, inferior meatus of nose; 17, alveolar process of the superior maxilla; 18, nasal surface of inferior turbinated bone; 19, groove for anterior palatine nerve and vessels; 20, palatal process of superior maxilla; 21, maxillary crest forming part of nasal septum; 22, vomer forming part of nasal septum.

Coronal Section of Skull

Shown is a coronal section passing inferiorly through interval between between the first and second…

"Adenocarpus frankenioides. 1. the standard, wings, and keel split open; 2. the stamens; 3. a cross section of a seed; 4. a legume, with a portion of one of the valves turned back." -Lindley, 1853

Codeso del Pico

"Adenocarpus frankenioides. 1. the standard, wings, and keel split open; 2. the stamens; 3. a cross…

The Cathedral was founded in 680 with Bishop Bosel as its head. The first cathedral was built in this period but nothing now remains of it. The existing crypt of the cathedral dates from the 10th century and the time of St Oswald, bishop of Worcester. The current cathedral dates from the 12th and 13th centuries.

Worcester Cathedral

The Cathedral was founded in 680 with Bishop Bosel as its head. The first cathedral was built in this…

The mitre is a type of headgear now known as the traditional, ceremonial head-dress of bishops and certain abbots in the Roman Catholic Church, the Anglican Communion, some Lutherans.In Western Christianity, the crozier is shaped like a shepherd's crook. A bishop bears this staff as "shepherd of the flock of God"

Mitre and Crosier

The mitre is a type of headgear now known as the traditional, ceremonial head-dress of bishops and certain…

Merton College is one of the constituent colleges of the University of Oxford in England. Its foundation can be traced back to the 1260s when Walter de Merton, chancellor to Henry III and later to Edward I, first drew up statutes for an independent academic community and established endowments to support it. The southern gateway is surmounted by a tower of the four Orders, probably inspired by Italian examples that Warden Savile would have seen on his European travels.

Gate of Merton College, Oxford

Merton College is one of the constituent colleges of the University of Oxford in England. Its foundation…

An illustration of a cornucopia which is also know as a horn 'o' plenty. The cornucopia is a symbol of food and abundance dating back to the 5th century BC.

Cornucopia

An illustration of a cornucopia which is also know as a horn 'o' plenty. The cornucopia is a symbol…

The church foundations date back nearly nine hundred years, being created by Roger de Beaumont, 2nd Earl of Warwick in 1123. In addition to founding the church, de Beaumont established the College of Dean and Canons at the church. The only surviving part of the Norman church which de Beaumont had built is the crypt. The college was dissolved in 1544, and granted by the crown to the burgesses of Warwick.

Beauchamp Chantry, St. Mary's, Warwick

The church foundations date back nearly nine hundred years, being created by Roger de Beaumont, 2nd…

Sir Thomas More (7 February 1478 – 6 July 1535), from 1935 Saint Thomas More, was an English lawyer, author, and statesman who in his lifetime gained a reputation as a leading humanist scholar, and occupied many public offices, including Lord Chancellor (1529–1532), in which he had numerous Protestant Christians burned at the stake. More coined the word "utopia", a name he gave to an ideal, imaginary island nation whose political system he described in the eponymous book published in 1516. He was beheaded in 1535 when he refused to sign the Act of Supremacy that declared Henry VIII Supreme Head of the Church in England.

Sir Thomas More

Sir Thomas More (7 February 1478 – 6 July 1535), from 1935 Saint Thomas More, was an English lawyer,…

Sir Thomas More (7 February 1478 – 6 July 1535), from 1935 Saint Thomas More, was an English lawyer, author, and statesman who in his lifetime gained a reputation as a leading humanist scholar, and occupied many public offices, including Lord Chancellor (1529–1532), in which he had numerous Protestant Christians burned at the stake. More coined the word "utopia", a name he gave to an ideal, imaginary island nation whose political system he described in the eponymous book published in 1516. He was beheaded in 1535 when he refused to sign the Act of Supremacy that declared Henry VIII Supreme Head of the Church in England.

Sir Thomas More's House, Chelsea

Sir Thomas More (7 February 1478 – 6 July 1535), from 1935 Saint Thomas More, was an English lawyer,…

John Cardinal Fisher (c.1469 – 22 June 1535), from 1935 Saint John Fisher, was an English Catholic bishop, cardinal and martyr. He shares his feast day with Saint Thomas More on June 22 in the Roman Catholic calendar of saints and 6 July on the Anglican calendar of saints. Fisher and More were executed by King Henry VIII during the English Reformation for refusing to accept him as Head of the Church of England. He is the only member of the College of Cardinals to have suffered martyrdom.

John Cardinal Fisher

John Cardinal Fisher (c.1469 – 22 June 1535), from 1935 Saint John Fisher, was an English Catholic…

An illustration of a back street in a city.

Street

An illustration of a back street in a city.

The right astragalus. A, Upper surface. B, Under surface. Labels: 1, groove for flex, long, hallucis; 2, internal tubercle; 3, trochlear surface for tibia; 4, body; 5, for articulation with internal malleolus; 6, head; 7, for articulation with internal malleolus; 8, neck; 9, for articulation with external malleolus; 10, surface against which the inferior tibio fibular ligament rests; 11, external tubercle; 12, external tubercle; 13, posterior, middle, and anterior facets for os calcis; 14, for articulation with navicular; 15, surface resting on inferior calcaneo-navicular ligament; 16, interosseous groove; 17, internal tubercle; 18, groove for the flexor longus hallucis.

Astragalus

The right astragalus. A, Upper surface. B, Under surface. Labels: 1, groove for flex, long, hallucis;…

The right astragalus. A, As seen from the outer side. B, As seen from the inner side. Labels: 1, external tubercle; 2, groove for flexor longus hallucis; 3, internal tubercle; 4, surface against which the inferior tibio-fibular ligament rests; 5, trochlea for tibia; 6, for articulation with external malleolus; 7, neck; 8, head; 9, for articulation with navicular; 10, interosseous groove; 11, anterior, middle, and posterior facets for os calcis; 12, body; 13, surface resting on internal calcaneo navicular ligament; 14, for articulation with navicular; 15, head; 16, neck; 17, trochlea for tibia; 18, for articulation with internal malleolus; 19, body; 20, impression for internal lateral ligament; 21, internal tubercle; 22, groove for flexor longus hallucis; 23, external tubercle; 24, interosseous groove; 25, posterior and middle facets for os calis.

Astragalus

The right astragalus. A, As seen from the outer side. B, As seen from the inner side. Labels: 1, external…

A bust is a sculpted or cast representation of the upper part of the human figure, depicting a person's head and neck, as well as a variable portion of the chest and shoulders. The piece is normally supported by a plinth. These forms recreate the likeness of an individual. These may be of any suitable material (such as marble, bronze or clay).

Bust of Man

A bust is a sculpted or cast representation of the upper part of the human figure, depicting a person's…

Peter Jan Beckx (February 8, 1795, Sichem, Belgium - March 4, 1887, Rome, Italy) was a Belgian Jesuit, elected 22nd Superior-General of the Society of Jesus. The Duke and Duchess of Anhalt-Köthen converted to Catholicism in 1825 and asked for a Jesuit chaplain. Beckx was appointed to this duty, and went to live in Köthen. By giving classes to children in his own house, building a little church and organizing spiritual activities he brought many people back to the Catholic faith. By 1883 - 88 years old and already 30 in office — Peter Beckx was an infirm. On his own accord he called a General Congregation in order that a 'Vicar General with rights of succession' be given him. General Congregation XXIII met in 1883, in Rome, and the 24 September Anton Anderledy, a Swiss Jesuit priest, was elected. Beckx, though remaining in title the 'Superior General' in effect abdicated his charge entirely. He died four years later at the age of ninety-two.

Peter Jan Beckx

Peter Jan Beckx (February 8, 1795, Sichem, Belgium - March 4, 1887, Rome, Italy) was a Belgian Jesuit,…

An illustration of a man carrying a container with his rifle on his back and with a large knife in his belt loop.

Man Hunting

An illustration of a man carrying a container with his rifle on his back and with a large knife in his…

The superficial muscles of the back.

Superficial Muscles of the Back

The superficial muscles of the back.

Shown are the muscles of the deltoid region and back of the arm

Back View of Shoulder Muscles

Shown are the muscles of the deltoid region and back of the arm

The muscles of the back of the arm, forearm, and hand.

Back View of Arm Muscles

The muscles of the back of the arm, forearm, and hand.

The superficial muscles of the back of the forearm.

Muscles of the Back Forearm

The superficial muscles of the back of the forearm.

The muscles of the back of the thigh.

Back Thigh Muscles

The muscles of the back of the thigh.

The muscles of the back of the leg showing soleus muscle.

Back Leg Muscles

The muscles of the back of the leg showing soleus muscle.

The deep muscles on the back of the left leg.

Deep Muscles of the Back Leg

The deep muscles on the back of the left leg.

Deep muscles of the back.

Deep Back Muscles

Deep muscles of the back.

The muscles of the face and scalp.

Muscles of the Head

The muscles of the face and scalp.

Superficial view of the muscles of mastication.

Head Showing Mastication Muscles

Superficial view of the muscles of mastication.

A deep view of the muscles of mastication. The zygoma and masseter muscle are removed.

Head Showing Deep Mastication Muscles

A deep view of the muscles of mastication. The zygoma and masseter muscle are removed.

The pterygoid region.

Head Showing Pterygoid Region

The pterygoid region.

Back view of the medulla, pons, and mesencephalon of a full term human fetus.

Back View of Medulla, Pons, and Mesencephalon

Back view of the medulla, pons, and mesencephalon of a full term human fetus.

The flower of a species of Angelica, a flowering plant in the Apiaceae family.

Angelica

The flower of a species of Angelica, a flowering plant in the Apiaceae family.

"Benthamia japonica. 1. a flower; 2. a perpendicular section of the pistil; 3. a head of fruit; 4. a section of a seed." -Lindley, 1853

Dogwood

"Benthamia japonica. 1. a flower; 2. a perpendicular section of the pistil; 3. a head of fruit; 4. a…

"Brunia japonica. 1. a flower; 2. a perpendicular section of the pistil; 3. a head of fruit; 4. a section of a seed." -Lindley, 1853

Butttonbush

"Brunia japonica. 1. a flower; 2. a perpendicular section of the pistil; 3. a head of fruit; 4. a section…

"Cytinus Hypocistis. 1. A flower; 2. a head of anthers; 3. a transverse section of the ovary." -Lindley, 1853

Cytinus

"Cytinus Hypocistis. 1. A flower; 2. a head of anthers; 3. a transverse section of the ovary." -Lindley,…

"Centrolepis fascicularis. 1. A head of flowers; 2. a single flower separated; 3. an ovary with the style cut off." -Lindley, 1853

Centrolepis

"Centrolepis fascicularis. 1. A head of flowers; 2. a single flower separated; 3. an ovary with the…

The distribution of the cutaneous nerves on the back of the trunk. On one side the distribution of the several nerves is represented, the letters indicating their nomenclature. Labels: G.O (C.2), great occipital; C.3, least occipital; T.1, et seq., posterior primary division of thoracic nerves; L.1, et seq., posterior primary divisions of first three lumbar nerves; S.1, et seq., posterior primary division of sacral nerves; Acr, acromial branches from cervical plexus; T.2-12, lateral branches of nerve; E.C, external cutaneous nerve; S.Sc, small sciatic nerve. One the other side a schematic representation is given of the areas supplied by the above nerves, the numeral indicating the spinal origin of the branches of distribution to each area.

Distribution of Cutaneous Nerves on the Back

The distribution of the cutaneous nerves on the back of the trunk. On one side the distribution of the…

The Irish form of the sprung cart, called a jaunting car or jaunty car, was a light, horse-drawn, two-wheeled open vehicle with seats placed lengthwise, either face to face or back to back. It was a popular mode of transportation in 19th Century Dublin popularized by Valentine Vousden in a song by that name. Also called an outside car or sidecar, it was peculiar in that its seats ran longitudinally and the passengers' feet were placed on a footboard outboard of the wheels.

Jaunting Car

The Irish form of the sprung cart, called a jaunting car or jaunty car, was a light, horse-drawn, two-wheeled…

An illustration of a brown pelican with a fish in it's mouth and a sea gull resting on his back. The brown pelican is the smallest of the eight species of pelican, although it is a large bird in nearly every other regard. It lives strictly on coasts from Washington and Virginia south to northern Chile and the mouth of the Amazon River, as well as the island of Saut d'Eau in Trinidad and Tobago. Some immature birds may stray to inland freshwater lakes. After nesting, North American birds move in flocks further north along the coasts, returning to warmer waters for winter. Their young are hatched in broods of about 3, and eat around 150 lbs. of fish in the 8-10 month period they are cared for. Gulls (often informally Seagulls) are birds in the family Laridae. They are typically medium to large birds, usually gray or white, often with black markings on the head or wings. They typically have harsh wailing or squawking calls. They have stout, longish bills, and webbed feet.

Brown Pelican and Sea Gull

An illustration of a brown pelican with a fish in it's mouth and a sea gull resting on his back. The…

Distribution of cutaneous nerves on the back of the lower legs. On the one side the distribution of the several nerves is represented the letters indicating their nomenclature. Labels: L.1, 2, 3, S.1, 2, 3, posterior primary division of lumbar and sacral nerves: I.H, iliohypgastric; T.12, lateral and posterior branches of the last thoracic nerve; A.Co1, posterior sacrococcygeal nerve; A.Co2, anterior sacro-coccygeal nerve; PERF., perforating cutaneous nerve; S.Sc, small sciatic; E.C, external cutaneous; OBT, obturator; I.C, internal cutaneous; E.P.S, sural branches of peroneal; I.S., internal saphenous; E.S, external saphenous; M.C, musculocutaneous; CALC, calcanean branch of posterior tibial; I.P, internal plantar; E.P. external plantar nerve. On the other side a schematic representation is given of the areas supplied by the above nerves, the letters indicating the spinal origin of the branches of distribution to each area.

Cutaneous Nerves of the Back Legs

Distribution of cutaneous nerves on the back of the lower legs. On the one side the distribution of…

General Edmund Pendleton Gaines was awarded the <em>Thanks of Congress</em>, an Act of Congress Gold Medal, for his service in the War of 1812.

General Gaines's Medal

General Edmund Pendleton Gaines was awarded the Thanks of Congress, an Act of Congress Gold…

Benjamin Chew (November 19, 1722 – January 20, 1810) was a fifth-generation American, a Quaker-born legal scholar, a prominent and successful Philadelphia lawyer, head of the Pennsylvania Judiciary System under both Colony and Commonwealth, and Chief Justice of the Supreme Court of the Province of Pennsylvania. Chew was well known for his precision and brevity in making legal arguments as well as his excellent memory, judgment, and knowledge of statutory law. His primary allegiance was to the supremacy of law and constitution. Pictured here is the residence of Justice Chew.

Chew's House

Benjamin Chew (November 19, 1722 – January 20, 1810) was a fifth-generation American, a Quaker-born…

A Congressional Gold Medal awarded to Ulysses S. Grant.

The Grant Medal (back)

A Congressional Gold Medal awarded to Ulysses S. Grant.

An illustration of two men carrying small row boats on their back.

Carrying Boat

An illustration of two men carrying small row boats on their back.

An illustration of a roman coin (denarius). The left side represents the laurel-crowned head of Titus. The right side depicts a female sitting underneath a palm tree with helmets behind her. The Roman currency system included the denarius after 211 BC, a small silver coin, and it was the most common coin produced for circulation but was slowly debased until its replacement by the antoninianus.

Roman Coins (Denarius)

An illustration of a roman coin (denarius). The left side represents the laurel-crowned head of Titus.…

Medal awarded to Captain Lawrence by Congress.

Lawrence Medal (back)

Medal awarded to Captain Lawrence by Congress.

An Aztec sculpture of an elephant-faced god, supposedly an imitation of the Hindu god, Ganesha.

Aztec Imitation of Ganesha - Elephant-faced god

An Aztec sculpture of an elephant-faced god, supposedly an imitation of the Hindu god, Ganesha.

Atotarho is a historical figure for whom there is almost no historical record. Oral tradition stories hold that Atotarho was a brutal, evil sorcerer. These stories relate that Atotarho had snakes growing out of his head and that he was a cannibal.

Atatarho

Atotarho is a historical figure for whom there is almost no historical record. Oral tradition stories…

Instead of a standard bouchon assembly being used this grenade is equipped with a Percussion Plug Assembly, Mark I, containing the striker, primer and standard two inch length Bickford fuse. The grenade is ignited by means of first, removing the percussion cover of cap, then knocking or striking the head of the striker sharply against a hard object or against the body.

Cross-Section of a Grenade

Instead of a standard bouchon assembly being used this grenade is equipped with a Percussion Plug Assembly,…

The buffer consists of a tube in which are placed successively from front to rear, the buffer head, a brass friction cup with concave interior and split to allow it to spring; a steel cone to fit into the cup. For of these ups and cones are placed one after the other. Next is the buffer spring and finally the buffer nut which is screwed into the end of the tube and forms a seat for the spring.

Buffer Mechanism

The buffer consists of a tube in which are placed successively from front to rear, the buffer head,…

The guillotine was a device used for carrying out executions by decapitation. It consists of a tall upright frame from which a heavy blade is suspended. This blade is raised with a rope and then allowed to drop, severing the victim's head from his or her body. The device is noted for long being the main method of execution in France and, more particularly, for its use during the French Revolution. The guillotine also "became a part of popular culture, celebrated as the people's avenger by supporters of the Revolution and vilified as the preeminent symbol of the Terror by opponents.

Guillotine

The guillotine was a device used for carrying out executions by decapitation. It consists of a tall…

A steam engine is a heat engine that performs mechanical work using steam as its working fluid. Steam engines have a long history, going back almost two thousand years. Early devices were not practical power producers, but more advanced designs became a major source of mechanical power during the industrial revolution. Modern steam turbines generate about half of the electric power in the world.

Steam Engine

A steam engine is a heat engine that performs mechanical work using steam as its working fluid. Steam…

An egret is any of several herons, most of which are white or buff, and several of which develop fine plumes (usually milky white) during the breeding season. Many egrets are members of the genera Egretta or Ardea which contain other species named as herons rather than egrets. The distinction between a heron and an egret is rather vague, and depends more on appearance than biology. The word "egret" comes from the French word "aigrette", referring to the long filamentous feathers that seem to cascade down an egret's back during the breeding season.

Egrets

An egret is any of several herons, most of which are white or buff, and several of which develop fine…