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"Mysis flexuosa, from side. b., Brood-pouch borne on posterior thoracic limbs; o., otocyst in tail. Note eight pairs of similar biramose thoracic feet. The last two thoracic segments are not covered by the shield." -Thomson, 1916

Mysis Flexuosa

"Mysis flexuosa, from side. b., Brood-pouch borne on posterior thoracic limbs; o., otocyst in tail.…

"The haddock. n.a., Nasal apertures (double on each side); d.f.1, d.f.2, d.f.3, dorsal unpaired fins; c.f., the caudal fin of the homocercal tail. b., Barbule; op., operculum covering the four gills; br.m., continuation of the gill-cover forming the branchiostegal membrane; pv.f., pelvic fin (=hind-limb)--note its jugular position in front of p.f., the pectoral fin (=fore-limb)." -Thomson, 1916

Haddock

"The haddock. n.a., Nasal apertures (double on each side); d.f.1, d.f.2, d.f.3, dorsal unpaired fins;…

"Lateral view of dogfish (Scyllium catulus). Note ventral mouth with naso-buccal groove, heterocercal tail, and unpaired fins. gs., Gill-slits; pc., pectoral fins; pv., pelvic fins." -Thomson, 1916

Dogfish

"Lateral view of dogfish (Scyllium catulus). Note ventral mouth with naso-buccal groove, heterocercal…

"Sturgeon (Acipenser sturio). Note the elongated snout, the barbules bounding the ventral mouth, the operculum covering the gills, the rows of bony scutes, the markedly heterocercal tail." -Thomson, 1916

Sturgeon

"Sturgeon (Acipenser sturio). Note the elongated snout, the barbules bounding the ventral mouth, the…

"Life history of a frog. Metamorphosis to frog." -Thomson, 1916

Frog Stage 5

"Life history of a frog. Metamorphosis to frog." -Thomson, 1916

"Origin of amnion and allantois. 1. Rise of amniotic folds (a.f.) around embryo (e); p.p., pleuro-peritoneal cavity; y., yolk. 2. Further growth of amniotic folds (a.f.) over embryo and around yolk. 3. Fusion of amniotic folds above embryo; a.p., amnion proper; s.z.m., subzonal membrane; y.s., yolk-sac. 4. Outgrowth of allantois (al.); amniotic cavity (a.c.); h., head end; t. tail end. 5. Complete enclosure and reduction of yolk-sac (y.s.); s.z.m, subzonal membrane; a.p., amnion proper; al., allantois; g., gut of embryo." -Thomson, 1916

Reptile Development

"Origin of amnion and allantois. 1. Rise of amniotic folds (a.f.) around embryo (e); p.p., pleuro-peritoneal…

"Young bearded griffin (Gypaetus barbatus). Showing the feather-tracts or pterylae, for instance those on the breast (PT.). E., ear; P., web or propatagium; TH., thumb; PR., bases of primary feathers; S., bases of secondary feathers; B.S., bare streak without pterylae; CL., cloaca; R., bases of rectrices or tail feathers." -Thomson, 1916

Lammergeier

"Young bearded griffin (Gypaetus barbatus). Showing the feather-tracts or pterylae, for instance those…

"Diagrams of some principal forms of tails in fishes. A, protocercal fin (as in Polypterus); B, heterocercal (as in Sharks); C, homocercal (as in most Teleosts); D, homocercal (as in Amia)." -Galloway, 1915

Fishtails

"Diagrams of some principal forms of tails in fishes. A, protocercal fin (as in Polypterus); B, heterocercal…

"Brachionus rubens. A, from the dorsal aspect; B, from the right side. a, anus; br, brain; d. f. dorsal feeler; c. gl, cement gland; cl, cloaca; c. l, ciliary lobes; c. v, contractile vesicle; e, eye-spot; int, intestine; lr, lorica; l. f, lateral feeler; m, muscular bands; nph, nephridial tubes; ov, ovary; ph, pharynx; st, stomach; t, tail; tr, d, trochal disc; vt, vitellarium." -Parker, 1900

Brachionus Rubens

"Brachionus rubens. A, from the dorsal aspect; B, from the right side. a, anus; br, brain; d. f. dorsal…

"Diagram of the metamorphosis of the free, tailed larva into the fixed Ascidian. A, stage of free-swimming larva; B, larva recently fixed; C, older fixed stage. adh, adhesive papillae; atr, atrial cavity; cil. gr, ciliated groove; end, endostyle; ht, heart; med, ganglion of trunk; n. gn, nerve-ganglion; noto, notochord; or, oral aperture; rect, reectum; sens ves, sense vesicle; stig, stigmata; stol, stolon; t, tail." -Parker, 1900

Ascidian Stages

"Diagram of the metamorphosis of the free, tailed larva into the fixed Ascidian. A, stage of free-swimming…

"Pterylosis of Columba livia. A, ventral; B, dorsal. al. pt, alar pteryla or wing-tract; c. pt, cephalic pteryla or head-tract; cd. pt, caudal pteryla or tail-tract; cr. pt, crural pteryla; cr. apt, cervical apterium or neck-space; fm. pt, femoral pteryla; hu. pt, humeral pteryla; lat. apt, lateral apterium; sp. pt, spinal pteryla; v. apt, ventral apterium; v. pt, ventral pteryla." -Parker, 1900

Rock Pigeon Feather Tracts

"Pterylosis of Columba livia. A, ventral; B, dorsal. al. pt, alar pteryla or wing-tract; c. pt, cephalic…

"A scouring-rush (Equisetum sylvaticum). At the right is a colorless fertile stem, in the middle a green sterile one, and at the left a green fertile one." -Bergen, 1896

Scouring Rush

"A scouring-rush (Equisetum sylvaticum). At the right is a colorless fertile stem, in the middle a green…

A genus of rasorial birds, included in the family of partridges, to which they are nearly allied, but from which they differ in being smaller, in having a relatively shorter tail, no red space above the eye, longer wings, and no spur on the legs. The common quail is a migratory bird, and is found in every country of Europe, and in many spaces of Asia and Africa.

Common Quail

A genus of rasorial birds, included in the family of partridges, to which they are nearly allied, but…

A most beautiful Central American bird of the Trogon family. It is about the size of a magpie and the male is adorned with tail-fathers from three to three and a half feet in length, and of a gorgeous emerald colour.

Quezal Bird

A most beautiful Central American bird of the Trogon family. It is about the size of a magpie and the…

A fish of the carp family, having the back of an olive color; the sides and belly yellow, marked with red; the ventral and anal fins and tail of a deep-red color.

Rudd

A fish of the carp family, having the back of an olive color; the sides and belly yellow, marked with…

The name of animals of the class Arachnida. Scorpions have an elongated body, suddenly terminated by a long slender tail formed of six joints, the last of which terminates in an arcuated and very acute sting, which effuses a venomous liquid.

Arachnid Scorpion

The name of animals of the class Arachnida. Scorpions have an elongated body, suddenly terminated by…

"Lizard's tail (Saururus cernuus). Portions of leaf-epidermis; U, upper epidermis; L, lower epidermis; ep, epidermal cell; st, guard-cells of the stomata." -Gager, 1916

Leaf Epidermis

"Lizard's tail (Saururus cernuus). Portions of leaf-epidermis; U, upper epidermis; L, lower epidermis;…

The branched character of the cells is seen. Shown is a transverse section from a cross section of the tail of a rabbit, showing sheath, fibrous septa, and branched connective tissue corpuscles. The spaces left white in the drawing represent the tendinous fibers in transverse section.

Branched Tendon Cells

The branched character of the cells is seen. Shown is a transverse section from a cross section of the…

"Staminate flower of the broad-leaved cat-tail (Typha latifolia)." -Gager, 1916

Cattail Flower

"Staminate flower of the broad-leaved cat-tail (Typha latifolia)." -Gager, 1916

Embryo chick at fourth day, viewed as a transparent object, lying on its left side. CH, cerebral hemispheres; FB, forebrain or vesicle of third ventricle, with Pn, pineal gland projecting from its summit; MB, midbrain; Cb, cerebellum; IV V, fourth ventricle; L, lens; chs, choroidal slit; Cen V, auditory vesicle; s m, superior maxillary process; 1F, 2F, 3F,4F., first, second, third, and fourth visceral folds; V, fifth nerve, sending one branch (ophthalmic) to the eye, and another to the first pharyngeal nerve, passing to the third visceral arch; G.Pg, pneumogastric nerve, passing towards the fourth visceral arch; iv, investing mass; ch, notochord; its front end cannot be seen in the living embryo, and it does not end as shown in the figure, but takes a sudden bend downwards, and then terminated in a point; Ht, heart seen through the walls of the chest; MP, muscle-plates; W, wing, showing commencing differentiation of segments, corresponding to arm, forearm, and hand; H L, hind-limb, as yet a shapeless bud, showing no differentiation. Beneath it is seen the curved tail.

Embryo Chick at Fourth Day

Embryo chick at fourth day, viewed as a transparent object, lying on its left side. CH, cerebral hemispheres;…

Capillary blood vessel of the tail of a young larval frog. a, capillaries permeable to blood; b, fat granules attached to the walls of the vessels, and concealing the nuclei; c, hollow prolongation of a capillary ending in a point; d, a branching cell with nucleus and fat granules; it communicates by three branches with prolongation of capillaries already formed; e, blood corpuscles still containing granules of fat.

Capillary Blood Vessels of Larval Frog

Capillary blood vessel of the tail of a young larval frog. a, capillaries permeable to blood; b, fat…

Development of capillaries in the regenerating tail of a tadpole. a b c d, sprouts and cords of protoplasm.

Development of Capillaries of a Tadpole

Development of capillaries in the regenerating tail of a tadpole. a b c d, sprouts and cords of protoplasm.

Development of capillaries in the regenerating tail of a tadpole. a b c d, sprouts and cords of protoplasm. The sprouts and cords of protoplasm have become channeled out into capillaries.

Development of Capillaries of a Tadpole

Development of capillaries in the regenerating tail of a tadpole. a b c d, sprouts and cords of protoplasm.…

a: external antenna; b: external foot-jaw; c: tail or abdomen.

Portunus Variegatus, male

a: external antenna; b: external foot-jaw; c: tail or abdomen.

"The White Ray is in the form of a rhomb, the point of the muzzle forming the lower angle, the longest ray of each pectoral forming the lateral angles, while the summit of the tail forms the last angle."

The White Ray (Raia Batis)

"The White Ray is in the form of a rhomb, the point of the muzzle forming the lower angle, the longest…

"Foxtail grass, the common name given to certain grasses, because of the shape of the large clusters in which the flowers are arranged." -Foster, 1921

Foxtail Grass

"Foxtail grass, the common name given to certain grasses, because of the shape of the large clusters…

"From the head, backward to the tail, the body feathers increase in strength and size, also alter in form; those on the face, or around the base of the bill, being the smallest, the tail coverts longest."

Neck-Covert

"From the head, backward to the tail, the body feathers increase in strength and size, also alter in…

"From the head, backward to the tail, the body feathers increase in strength and size, also alter in form; those on the face, or around the base of the bill, being the smallest, the tail coverts longest."

Tail-Covert

"From the head, backward to the tail, the body feathers increase in strength and size, also alter in…

"The Pheasant is remarkable for the extraordinary length of its tail, the middle feathers of which in one species sometimes attain a length of seven or eight feet."

Common Pheasants

"The Pheasant is remarkable for the extraordinary length of its tail, the middle feathers of which in…

"The Pheasant is remarkable for the extraordinary length of its tail, the middle feathers of which in one species sometimes attain a length of seven or eight feet."

Reeves' Pheasant (Phasianus Reevesii)

"The Pheasant is remarkable for the extraordinary length of its tail, the middle feathers of which in…

"The family of Pavonidae comprehends the Peacock." The male bird forms the beautiful array of tail feathers each Spring.

Peacock

"The family of Pavonidae comprehends the Peacock." The male bird forms the beautiful array of tail feathers…

"The Whidah-Birds have long, drooping tail feathers. They are natives of South Africa and Senegal."

Whidah-Birds

"The Whidah-Birds have long, drooping tail feathers. They are natives of South Africa and Senegal."

"The Harpy or Crested Eagle is the model species of the genus to which it belongs. It measures nearly five feet from the extremity of the head to that of the tail."

Harpy-Eagle (Harpyia Destructor)

"The Harpy or Crested Eagle is the model species of the genus to which it belongs. It measures nearly…

The tail of these worms will grow as the depth of water is increased to accommodate breathing.

Larvae of Helophilus

The tail of these worms will grow as the depth of water is increased to accommodate breathing.

"It breathes, like some other insects, through its tail. It walks badly and slowly on land, but swims and cuts through the water with a prodigious rapidity."

Corixa Striata

"It breathes, like some other insects, through its tail. It walks badly and slowly on land, but swims…

"Cat-tail curtain raised by loop from bottom." -beard, 1906

Cat-tail curtain

"Cat-tail curtain raised by loop from bottom." -beard, 1906

A tail-piece engraved by Thomas Bewick from 'The Quadrupeds' shows a small boy "pulling a colt's tail while the mother is rushing to his rescue." -Cundall, 1895

Bewick's Tail-Piece

A tail-piece engraved by Thomas Bewick from 'The Quadrupeds' shows a small boy "pulling a colt's tail…

The Greater Bird of Paradise was once called as the Emerald Bird of Paradise because of the dark green color on its throat.

Greater Bird of Paradise

The Greater Bird of Paradise was once called as the Emerald Bird of Paradise because of the dark green…

The swallowtail butterfly (Papilio machaon) is a large colorful butterfly with atleast 550 species.

Swallowtail Butterfly

The swallowtail butterfly (Papilio machaon) is a large colorful butterfly with atleast 550 species.

"A species of <em>Isis</em> has numerous slender branches, furnished with cylindrical knows at intervals, contracted toward the middle, finely striated; it has a singular resemblance to the Common Mare's Tail."

Isis Hippuris

"A species of Isis has numerous slender branches, furnished with cylindrical knows at intervals,…

"7. locusta of Stipa pennata" (Feather Grass); "8. rachis, bracteae, and florets of Cynosurus cristatus" (Crested Dog's-Tail). -Lindley, 1853

Feather Grass and Crested Dog's-Tail

"7. locusta of Stipa pennata" (Feather Grass); "8. rachis, bracteae, and florets of Cynosurus cristatus"…

"Hippuris vulgaris. 1. a complete flower; 2. a section of the pistil, showing the position of the ovule; 3. a section of the ripe fruit and seed." -Lindley. 1853

Common Mare's Tail

"Hippuris vulgaris. 1. a complete flower; 2. a section of the pistil, showing the position of the ovule;…

An illustration of a small dog holding a fan with its tail.

Dog with Fan

An illustration of a small dog holding a fan with its tail.

A jester, joker, jokester, fool, wit-cracker, prankster, or buffoon is a member of a profession that came into popularity in the Middle Ages. Jesters are always thought to have worn brightly colored clothes and eccentric hats in a motley pattern. Their hats, sometimes called the cap 'n bells, cockscomb (obsolete coxcomb), were especially distinctive; made of cloth, they were floppy with three points (liliripes) each of which had a jingle bell at the end. The three points of the hat represent the ass's ears and tail worn by jesters in earlier times. Other things distinctive about the jester were his laughter and his mock scepter, known as a bauble or maharoof.

Jester

A jester, joker, jokester, fool, wit-cracker, prankster, or buffoon is a member of a profession that…

Newspapers and speakers especially condemned the "land embargo" &mdash; the cutting-off trade with Canada. The trade so suddenly thrown into confusion by it was represented in a caricature by a bewildered serpent which had been suddenly stopped in its movements by two trees, marked, respectively, "Embargo" and "Non-Importation Act." The wondering snake is puzzled to know what has happened, and the head cries out, "What's the matter, tail?" The latter answers, "I can't get out." A cock, representing France, stands by, joyfully.

Non Importation Act

Newspapers and speakers especially condemned the "land embargo" — the cutting-off trade with Canada.…

The Yellow-throated Vireo, Vireo flavifrons, is a small American songbird. Adults are mainly olive on the head and upperparts with a yellow throat and white belly; they have dark eyes with yellow "spectacles". The tail and wings are dark with white wing bars. They have thick blue-grey legs and a stout bill. Their breeding habitat is open deciduous woods in southern Canada and the eastern United States

Yellow-throated Vireo

The Yellow-throated Vireo, Vireo flavifrons, is a small American songbird. Adults are mainly olive on…

The Brown-tail (Euproctis chrysorrhoea) is a moth of the family Lymantriidae. It is distributed throughout Europe. The wings of this species are pure white, as is the body, apart from a tuft of brown hairs at the end of the abdomen. The brown colouration extends along most of the back of the abdomen in the male. In the female, the back of the abdomen is white but the tuft of brown hairs is much bigger. Ths wingspan is 36-42 mm. The species flies at night in July and August and is attracted to light.

Brown-tail Moth Web

The Brown-tail (Euproctis chrysorrhoea) is a moth of the family Lymantriidae. It is distributed throughout…

An illustration of the caterpillar of the brown-tail moth.

Brown-tail Caterpillar

An illustration of the caterpillar of the brown-tail moth.

The White-breasted Nuthatch (Sitta carolinensis) is a small songbird of the nuthatch family which breeds in old-growth woodland across much of temperate North America. It is a stocky bird, with a large head, short tail, powerful bill and strong feet. The upperparts are pale blue-gray, and the face and underparts are white. It has a black cap and a chestnut lower belly. The nine subspecies differ mainly in the color of the body plumage.

White-breasted Nuthatch

The White-breasted Nuthatch (Sitta carolinensis) is a small songbird of the nuthatch family which breeds…

The Brown Creeper (Certhia americana), also known as the American Tree Creeper, is a small songbird, the only North American member of the treecreeper family Certhiidae. Adults are brown on the upperparts with light spotting, resembling a piece of tree bark, with white underparts. They have a long thin bill with a slight downward curve and a long tail. The male creeper has a slightly larger bill than the female. The Brown creeper is 11.7-13.5 cm long (4.6-5.3 in).

Brown Creeper

The Brown Creeper (Certhia americana), also known as the American Tree Creeper, is a small songbird,…

The Brown Thrasher (Toxostoma rufum) is a species of thrasher, part of a family of New World birds (Mimidae) that includes New World catbirds and mockingbirds. The Brown Thrasher is brown or reddish-brown above, with a white breast and throat streaked with brown, and two white bars on each wing. It has a long tail, and its beak is also relatively large and somewhat curved. Adults average about 29 cm (11.5 inches) in length.

Brown Thrasher

The Brown Thrasher (Toxostoma rufum) is a species of thrasher, part of a family of New World birds (Mimidae)…

The Grey Catbird (Dumetella carolinensis) is a medium-sized northern American perching bird of the mimid family. It is the only member of New World catbird genus Dumetella. Like the Black Catbird, it is among the basal lineages of the Mimidae. Adults are dark gray with a slim, black bill and dark eyes. They have a long dark tail, dark legs and a dark cap; they are rust-colored underneath their tail.

Gray Catbird

The Grey Catbird (Dumetella carolinensis) is a medium-sized northern American perching bird of the mimid…

The Yellow-throated Vireo, Vireo flavifrons, is a small American songbird. Adults are mainly olive on the head and upperparts with a yellow throat and white belly; they have dark eyes with yellow "spectacles". The tail and wings are dark with white wing bars. They have thick blue-grey legs and a stout bill. Their breeding habitat is open deciduous woods in southern Canada and the eastern United States

Yellow-throat Vireo

The Yellow-throated Vireo, Vireo flavifrons, is a small American songbird. Adults are mainly olive on…

The American Redstart, Setophaga ruticilla, is a New World warbler. They breed in North America, across southern Canada and the eastern USA. These birds are migratory, wintering in Central America, the West Indies, and northern South America. They are very rare vagrants to western Europe. This species is unrelated to the Old World redstarts. This species derives its name from the male's red tail, start being an old word for tail.

American Redstart

The American Redstart, Setophaga ruticilla, is a New World warbler. They breed in North America, across…

The Red-eyed Vireo, Vireo olivaceus, is a small American songbird, 13-14 cm in length. It is somewhat warbler-like but not closely related to the New World warblers. Adults are mainly olive-green on the upperparts with white underparts; they have a red iris and a grey crown edged with black. There is a dark blackish line through the eyes and a wide white stripe just above that line. They have thick blue-grey legs and a stout bill. They are yellowish on the flanks and under their tail. This bird, not always seen, may sing for long periods of time; it appears to be endlessly repeating the same question and answer. It holds the record for most songs given in a single day among bird species

Red-eyed Vireo

The Red-eyed Vireo, Vireo olivaceus, is a small American songbird, 13-14 cm in length. It is somewhat…

The Yellow-throated Vireo, Vireo flavifrons, is a small American songbird. Adults are mainly olive on the head and upperparts with a yellow throat and white belly; they have dark eyes with yellow "spectacles". The tail and wings are dark with white wing bars. They have thick blue-grey legs and a stout bill. Their breeding habitat is open deciduous woods in southern Canada and the eastern United States

Yellow-throated Vireo

The Yellow-throated Vireo, Vireo flavifrons, is a small American songbird. Adults are mainly olive on…

The Brown-tail (Euproctis chrysorrhoea) is a moth of the family Lymantriidae. It is distributed throughout Europe. The wings of this species are pure white, as is the body, apart from a tuft of brown hairs at the end of the abdomen. The brown colouration extends along most of the back of the abdomen in the male. In the female, the back of the abdomen is white but the tuft of brown hairs is much bigger. Their wingspan is 36-42 mm. The species flies at night in July and August and is attracted to light.

Brown-tail Moth

The Brown-tail (Euproctis chrysorrhoea) is a moth of the family Lymantriidae. It is distributed throughout…

The Downy Woodpecker, Picoides pubescens, is the smallest woodpecker in North America. Adults are mainly black on the upper parts and wings, with a white back, throat and belly and white spotting on the wings. There is a white bar above and below the eye. They have a black tail with white outer feathers barred with black. Adult males have a red patch on the back of the head.

Downy Woodpecker

The Downy Woodpecker, Picoides pubescens, is the smallest woodpecker in North America. Adults are mainly…

The Black-billed Cuckoo, Coccyzus erythropthalmus, is a cuckoo. Adults have a long brown tail and a black bill. The head and upper parts are brown and the underparts are white. There is a red ring around the eye. Juveniles are drabber, and the eye ring is greenish. Their breeding habitat is edges of wooded areas across North America east of the Rockies. They nest in a low tree or shrub, sometimes on the ground. They sometimes lay eggs in the nests of other birds.

Black-billed Cuckoo

The Black-billed Cuckoo, Coccyzus erythropthalmus, is a cuckoo. Adults have a long brown tail and a…

The Song Sparrow, Melospiza melodia, is a medium-sized American sparrow. Adults have brown upperparts with dark streaks on the back and are white underneath with dark streaking and a dark brown spot in the middle of the breast. They have a brown cap and a long brown rounded tail. Their face is grey with a streak through the eye.

Song Sparrow

The Song Sparrow, Melospiza melodia, is a medium-sized American sparrow. Adults have brown upperparts…