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The Mask Head is a Roman design.

Mask Head

The Mask Head is a Roman design.

The Mask Head is yet another Roman design.

Angry Mask Head

The Mask Head is yet another Roman design.

The Keystone mask is a Graeco Italic design that is made out of terracotta.

Keystone Mask

The Keystone mask is a Graeco Italic design that is made out of terracotta.

The Frieze mask is a Graeco Italic design.

Frieze Mask

The Frieze mask is a Graeco Italic design.

The Silenus Mask was used as a handle of an Etruscan vessel.

Silenus Mask

The Silenus Mask was used as a handle of an Etruscan vessel.

The mask decoration was founded in Pompeii, Rome. These masks were used as keystone decorations of doors and window arches.

Mask Decoration

The mask decoration was founded in Pompeii, Rome. These masks were used as keystone decorations of doors…

The mask decoration was found in Pompeii, Rome. These masks were used as keystone decorations of doors and window arches.

SideMask Decoration

The mask decoration was found in Pompeii, Rome. These masks were used as keystone decorations of doors…

The Satyr Mask (Greek Mythological character) was designed during the Italian Renaissance by Sansovino, is placed over a Festoon (wreath) in St. Maria del Popolo, a church in Rome, Italy.

Satyr Mask

The Satyr Mask (Greek Mythological character) was designed during the Italian Renaissance by Sansovino,…

The Etruscan Grotesque Mask is made out of terracotta.

Etruscan Grotesque Mask

The Etruscan Grotesque Mask is made out of terracotta.

The Grotesque mask is a Venetian Italian Renaissance design. It was often place on keystones, consoles, spouts, handles, shields, capitals, panels and carved furniture.

Grotesque Mask

The Grotesque mask is a Venetian Italian Renaissance design. It was often place on keystones, consoles,…

This Grotesque mask was designed during the Italian Renaissance, by Sansovino. It is found on the tomb of the cardinal Sforza in St. Maria del Popolo in Rome, Italy

Grotesque Mask

This Grotesque mask was designed during the Italian Renaissance, by Sansovino. It is found on the tomb…

The Single Grotesque mask comes from a frieze design during the Italian Renaissance. It was designed by Michelangelo in San Lorenzo, Florence, Italy.

Single Grotesque Mask

The Single Grotesque mask comes from a frieze design during the Italian Renaissance. It was designed…

The Pilaster Grotesque mask comes from a part of a capital pilaster of the tomb of Louis XII in St. Denis, France during the French Renaissance.

Pilaster Grotesque Mask

The Pilaster Grotesque mask comes from a part of a capital pilaster of the tomb of Louis XII in St.…

The Modern French Grotesque Mask were used on keystones, consoles, spouts, handles, shields, capitals, panels and carved furniture.

Modern French Grotesque

The Modern French Grotesque Mask were used on keystones, consoles, spouts, handles, shields, capitals,…

The Modern French Grotesque Masks were used on keystones, consoles, spouts, handles, shields, capitals, panels and carved furniture.

Modern French Grotesque Mask

The Modern French Grotesque Masks were used on keystones, consoles, spouts, handles, shields, capitals,…

The Carved Bench Grotesque Mask is a mask design carved on a bench in Bargello, Florence, Italy.

Carved Bench Grotesque Mask

The Carved Bench Grotesque Mask is a mask design carved on a bench in Bargello, Florence, Italy.

The Female Grotesque mask was designed on a metal shield during the German Renaissance.

Female Grotesque Mask

The Female Grotesque mask was designed on a metal shield during the German Renaissance.

The Female Grotesque mask was designed on a metal shield during the German Renaissance.

Female Grotesque Mask

The Female Grotesque mask was designed on a metal shield during the German Renaissance.

Akroter Grotesque mask. This mask is usually found on keystones, consoles, spouts, handles, shields, capitals, panels, and carved furniture.

Akroter Grotesque Mask

Akroter Grotesque mask. This mask is usually found on keystones, consoles, spouts, handles, shields,…

The Grotesque mask is a design used on keystones, consoles, spouts, handles, shields, capitals, panels, and carved furniture.

Grotesque Horn Mask

The Grotesque mask is a design used on keystones, consoles, spouts, handles, shields, capitals, panels,…

The Late French Grotesque Mask, found in the Theater de Bellecour in Lyons, France. The design was used on keystones, consoles, spouts, handles, shields, capitals, panels and carved furniture.

Late French Grotesque

The Late French Grotesque Mask, found in the Theater de Bellecour in Lyons, France. The design was used…

This Modern French Grotesque mask is found at the Ministry of War in Paris, France. This design used on keystones, consoles, spouts, handles, shields, capitals, panels, and carved furniture.

Evil Modern French Grotesque

This Modern French Grotesque mask is found at the Ministry of War in Paris, France. This design used…

This Grotesque Mask was designed by Michelangelo during the Italian Renaissance.

Rounded Grotesque Mask

This Grotesque Mask was designed by Michelangelo during the Italian Renaissance.

This Blunt Grotesque mask is found in the castle of Ecouen in France in 1538.

Blunt Grotesque Mask

This Blunt Grotesque mask is found in the castle of Ecouen in France in 1538.

This Floral Grotesque Mask was designed during the 16th century.

Floral Grotesque Mask

This Floral Grotesque Mask was designed during the 16th century.

This Chubby Grotesque Mask was designed during the German Renaissance.

Chubby Grotesque Mask

This Chubby Grotesque Mask was designed during the German Renaissance.

This Pulled Grotesque Mask is on a pedestal of a column on a tomb in Pforzheim, Germany during the German Renaissance. It was designed by Hans von Trarbach.

Pulled Grotesque Mask

This Pulled Grotesque Mask is on a pedestal of a column on a tomb in Pforzheim, Germany during the German…

This Winged Grotesque mask design comes from the spout of a can during the German Renaissance.

Winged Grotesque Mask

This Winged Grotesque mask design comes from the spout of a can during the German Renaissance.

This Melting Grotesque Mask has an escutcheon design of a lock during the German Renaissance.

Melting Grotesque Mask

This Melting Grotesque Mask has an escutcheon design of a lock during the German Renaissance.

This Mad Grotesque Mask is part of a modern panel designed by sculptor Hauptmann.

Mad Grotesque Mask

This Mad Grotesque Mask is part of a modern panel designed by sculptor Hauptmann.

The Farnese Dish Medusa Head is an onyx patera, or black dish. It is a Roman design.

Farnese Medusa Head Dish

The Farnese Dish Medusa Head is an onyx patera, or black dish. It is a Roman design.

This Medallion Medusa Head is a French design.

Medallion Medusa Head

This Medallion Medusa Head is a French design.

The Tympanum Medusa Head is found in the arch of the entrance of the Royal Palace of Tuileries in Paris, France.

Tympanum Medusa Head

The Tympanum Medusa Head is found in the arch of the entrance of the Royal Palace of Tuileries in Paris,…

The Grotesque pilaster is a squatting winged female without arms. It was designed during the Italian Renaissance.

Grotesque Pilaster

The Grotesque pilaster is a squatting winged female without arms. It was designed during the Italian…

The Winged Grotesque pilaster is a squatting winged female without arms. It is found on the tomb of Louis XII in the St. Denis church. It was designed during the French Renaissance.

Winged Grotesque Pilaster

The Winged Grotesque pilaster is a squatting winged female without arms. It is found on the tomb of…

This Flying Grotesque pilaster is a squatting winged female without arms. It is found in a palace in Siena, Italy during the Italian Renaissance.

Flying Grotesque Pilaster

This Flying Grotesque pilaster is a squatting winged female without arms. It is found in a palace in…

This Thin Grotesque column is a squatting winged female without arms. It is found in the Guadagni Palace in Florence, Italy.

Thin Grotesque Column

This Thin Grotesque column is a squatting winged female without arms. It is found in the Guadagni Palace…

This Grotesque column is a squatting winged female without arms. It is found in the Guadagni Palace in Florence, Italy.

Grotesque Column

This Grotesque column is a squatting winged female without arms. It is found in the Guadagni Palace…

The Italian Majolica Grotesque is designed on a pavement, made out of fine italian glazed earthenware. Found in Siena, Italy, it was designed during the Italian Renaissance

Grotesque Italian Majolica

The Italian Majolica Grotesque is designed on a pavement, made out of fine italian glazed earthenware.…

The Tall Grotesque stall is found in San Severino, Naples, Italy. It is a design of a winged female with an ending of foliage, designed during the Italian Renaissance.

Tall Grotesque Stall

The Tall Grotesque stall is found in San Severino, Naples, Italy. It is a design of a winged female…

The Grotesque stall is found in San Agostino, Perugia, Italy. It is a design of a winged female with an ending of foliage, designed during the Italian Renaissance.

Grotesque Stall

The Grotesque stall is found in San Agostino, Perugia, Italy. It is a design of a winged female with…

The Dancing Half-Figure Panels come from an altar. It is a design of a half-figure human body with the lower half that has a scroll ornament design of foliage.

Dancing Half-Figure Panels

The Dancing Half-Figure Panels come from an altar. It is a design of a half-figure human body with the…

The Half-Figure Panels come from an altar. It is a design of a half-figure human body with the lower half that has a scroll ornament design of foliage.

Half-Figure Panels

The Half-Figure Panels come from an altar. It is a design of a half-figure human body with the lower…

The Half-Figure Roman Relief is a design of a half-figure human body with a lower half that has a scroll ornament design of foliage.

Half-Figure Roman Relief

The Half-Figure Roman Relief is a design of a half-figure human body with a lower half that has a scroll…

The Half-figure Socle of Altar is the base platform design of the altar. It is a design of two half-figure human bodies with the bottom part is a scroll foliage design. This socle is found in the cathedral of Orvieto, Italy, designed during the Italian Renaissance.

Half-Figure Socle of Altar

The Half-figure Socle of Altar is the base platform design of the altar. It is a design of two half-figure…

This Half-Figure Relief is a design where the upper half is a human figure and the lower half is a scrolled foliage design. It was designed during the Italian Renaissance.

Half-Figure Relief

This Half-Figure Relief is a design where the upper half is a human figure and the lower half is a scrolled…

The Crouching Sphinx is a combination of the human bust with the body of the Lion. The Sphinx is an Egyptian invention that was used as the guardian of temples and tombs.

Crouching Sphinx

The Crouching Sphinx is a combination of the human bust with the body of the Lion. The Sphinx is an…

The Roman Sphinx is the bust of a woman with wings and the body of a lion. This design was found in the lower corner of an antique candelabrum.

Roman Sphinx

The Roman Sphinx is the bust of a woman with wings and the body of a lion. This design was found in…

The Roman candelabrum shaft is a design made out of marble. It is richly decorated with foliage and human figures.

Roman Candelabrum Shaft

The Roman candelabrum shaft is a design made out of marble. It is richly decorated with foliage and…

The Roman candelabrum shaft is a design made out of marble. It is richly decorated with foliage and human figures.

Roman Candelabrum Shaft

The Roman candelabrum shaft is a design made out of marble. It is richly decorated with foliage and…

The bicycle, bike, or cycle is a pedal-driven, human-powered vehicle with two wheels attached to a frame, one behind the other.

Bicycle

The bicycle, bike, or cycle is a pedal-driven, human-powered vehicle with two wheels attached to a frame,…

The bicycle, bike, or cycle is a pedal-driven, human-powered vehicle with two wheels attached to a frame, one behind the other.

Bicycle

The bicycle, bike, or cycle is a pedal-driven, human-powered vehicle with two wheels attached to a frame,…

"Human Thoracic Duct and Azygous Veins. a, receptacle of the chyle; b, trunk of the thoracic duct, opening at c into root of left innominate vein at junction of f, left jugular, and g, left subclavian vein; e, right innominate vein; d, d, d, several thoracic and lumbar lymphatic glands; h, h, a short portion of the esophagus. Two azygous veins run parallel with and on each side of the duct, until the left crosses behind the duct to join the right. The structures represented rest nearly upon the back-bone." -Whitney, 1911

Thoracic Duct

"Human Thoracic Duct and Azygous Veins. a, receptacle of the chyle; b, trunk of the thoracic duct, opening…

The cassava, yuca, manioc, mogo or mandioca (Manihot esculenta) is a woody shrub of the Euphorbiaceae (spurge family) native to South America that is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates. Cassava is the third largest source of carbohydrates for human food in the world, with Africa its largest center of production. The flour made of the roots is called tapioca.

Yuca

The cassava, yuca, manioc, mogo or mandioca (Manihot esculenta) is a woody shrub of the Euphorbiaceae…

"Transverse Section through Side Walls of Skull, showing the Inner Parts of the Ear. Co, concha or external ear, or pinna; EM, external auditory meatus; TyM, tympanic membrane; Inc, incus; Mall, malleus; ASC, PSC, ESC, anterior, posterior, and external semicircular canals; Coc, cochlea; Eu, Eustachian tube; IM, internal auditory meatus, through which the auditory nerve passes to the organ of hearing." -Whitney, 1911

Inner Ear

"Transverse Section through Side Walls of Skull, showing the Inner Parts of the Ear. Co, concha or external…

"External Ear, or Pinna. 1, helix; 2, fossa of antihelix, or fossa triangularis; 3, fossa of helix, or fossa scaphoidea; 4, antihelix; 5, 5, concha; 6, antitragus; 7, lobule; 8, tragus." -Whitney, 1911

External Ear

"External Ear, or Pinna. 1, helix; 2, fossa of antihelix, or fossa triangularis; 3, fossa of helix,…

"Early Human Embryo, giving diagrammatically the principal vessels antecedent to the establishment of the regular fetal circulation. H, heart; P, lungs; L, liver; T A, the aortic trunk or cardiac aorta; c, c', c", common, external, and internal carotids; s, subclavian artery; v, vertebral artery; 1, 2, 3, 4, 5, the aortic arches (the persistent left aortic arch hidden); A, subvertebral aorta; o, o', omphalomeseraic artery and vein, to and from U, the umbilical vesicle with its vitelline duct, dv; u, u, the two hypogastric or umbilical arteries, with the ramifications, u", u", in the placenta; u', umbilical vein; vh, hepatic vein; cv, inferior vena cava; vil, iliac veins; az, an azygous vein; vc, a posterior cardinal vein; vi, innominate vein; vp, portal vein; Dv, the ductus venosus; DC, a ductus Cuvieri. The anterior cardinal vein is seen beginning in the head and running down to the ductus Cuvieri, on the under side of the numbers 1, 2, 3, 4, 5." -Whitney, 1911

Human Embryo

"Early Human Embryo, giving diagrammatically the principal vessels antecedent to the establishment of…

"Diagram of Vertebrate Encephalon ... in longitudinal vertical section. Mb, mid-brain; in front of it all is forebrain, behind it all is hind-brain; laminaterminalis, represented by the heavy black line in upper figure; Olf, olfactory lobes; Hmp, cerebral hemispheres; ThE, thalamencephalon; Py, pituitary body; FM, foramen of Monro; CS, corpus striatum; Th, optic thalamus; CQ, corpora quadrigemina; CC, crura cerebri; Cb, cerebellum; PV, pons Varolii; MO, medulla oblongata; I, olfactory nerves; II, optic nerves; III, point of ext from brain of the oculimotores; IV, of the pathetici; VI, of the abducentes; V-XII, origins of other cerebral nerves; 1, olfactory ventricle; 2, lateral ventricle; 3, third ventricle; 4, fourth ventricle." -Whitney, 1911

Encephalon

"Diagram of Vertebrate Encephalon ... in longitudinal vertical section. Mb, mid-brain; in front of it…

"Diagram of Vertebrate Encephalon ... in horizontal section. Mb, mid-brain; in front of it all is forebrain, behind it all is hind-brain; Lt, laminaterminalis; Olf, olfactory lobes; Pn, pineal body, or conarium; M, foramen of Monro; CS, corpus striatum; Th, optic thalamus; Cb, cerebellum; MO, medulla oblongata; I, olfactory nerves; II, optic nerves; 1, olfactory ventricle; 2, lateral ventricle; 3, third ventricle; 4, fourth ventricle; + is in the iter e tertio ad quartum ventriculum." -Whitney, 1911

Encephalon

"Diagram of Vertebrate Encephalon ... in horizontal section. Mb, mid-brain; in front of it all is forebrain,…

"Anterior View, Distal End, of Right Humerus of a Man. H, humerus; epc, epicondyle, or external supracondyloid protuberance; ept, epitrochlea, or internal supracondyloid protuberance; cp, capitellum, or convex articular suface for head of radius; tr, trochlea, or transversely concave articular surface for the ulna; epc and cp are together the ectocondyle, and ept and tr are together the entocondyle." -Whitney, 1911

Humerus

"Anterior View, Distal End, of Right Humerus of a Man. H, humerus; epc, epicondyle, or external supracondyloid…