ClipArt ETC
The whorl of a flower.

Whorl

The whorl of a flower.

The bacca of a plant.

Bacca

The bacca of a plant.

"Legume.--A pod; applied to the fruit of leguminous plants, such as the pea, &c." -Newman, 1850

Legume

"Legume.--A pod; applied to the fruit of leguminous plants, such as the pea, &c." -Newman, 1850

The sheath of a flower.

Sheath

The sheath of a flower.

"Bracteae.--Small leaves placed between the proper leaves of the plant and the flower-cup." -Newman, 1850

Bractea

"Bracteae.--Small leaves placed between the proper leaves of the plant and the flower-cup." -Newman,…

"Spadix.--Flower stalk developed in a spatha, or sheath." -Newman, 1850

Spadix

"Spadix.--Flower stalk developed in a spatha, or sheath." -Newman, 1850

"Axillary.--Placed in the axilla (arm-pit). A term by which the angle formed by the union of the leaf and the stem is designated." -Newman, 1850

Axillary

"Axillary.--Placed in the axilla (arm-pit). A term by which the angle formed by the union of the leaf…

"Sessile.--Said of leaves seated on the stem, without footstalks." -Newman, 1850

Sessile

"Sessile.--Said of leaves seated on the stem, without footstalks." -Newman, 1850

"Corymb.--A bunch of flowers where the foot-stalks proceed from different parts of the principal axis, but all attain the same height." -Newman, 1850

Corymb

"Corymb.--A bunch of flowers where the foot-stalks proceed from different parts of the principal axis,…

"Racemes.--When flowers are arranged round a filiform simple axis, each particular flower being stalked, they are said to be in racemes." -Newman, 1850

Raceme

"Racemes.--When flowers are arranged round a filiform simple axis, each particular flower being stalked,…

"Pappus.--The down of seed, to waft it away." -Newman, 1850

Pappus

"Pappus.--The down of seed, to waft it away." -Newman, 1850

"Pome.--A pulpy fruit, containing a capsule, as the apple and pear." -Newman, 1850

Pome

"Pome.--A pulpy fruit, containing a capsule, as the apple and pear." -Newman, 1850

A climbing stem.

Climbing Stem

A climbing stem.

"Glume.--A part of the floral envelopes of grass." -Newman, 1850

Glume

"Glume.--A part of the floral envelopes of grass." -Newman, 1850

A creeping root.

Creeping Root

A creeping root.

A tuberous root.

Tuberous Root

A tuberous root.

"Buds.--Coverings of the germ." -Newman, 1850

Buds

"Buds.--Coverings of the germ." -Newman, 1850

An unequal leaf.

Unequal Leaf

An unequal leaf.

"Aculeus.--A prickle or sharp point, from the bark." -Newman, 1850

Aculeus

"Aculeus.--A prickle or sharp point, from the bark." -Newman, 1850

A thorn of a plant.

Thorn

A thorn of a plant.

The capsule of a flowering plant.

Flower Capsule

The capsule of a flowering plant.

"Liteocircus annularis. cent. caps, central capsule; ext. caps. pr, extra-capsular protoplasm; int. cap. pr, intra-capsular protoplasm; nu, nucleus; psd, pseudopods; skel, skeleton; z, cells of zooxanthella." -Parker, 1900

L. Annularis

"Liteocircus annularis. cent. caps, central capsule; ext. caps. pr, extra-capsular protoplasm; int.…

"Paramoecium caudatum. A, the living animal from the ventral aspect; B, the same in optical section: the arrow shows the course taken by food-particles; C, a specimen which has discharged its trichocysts; D, diagram of binary fission; buc. gr, buccal groove; cort, cortex; cu, cuticle; c. vac, vontractile vacuole; f. vac food vacuole; gul, gullet; med, medulla; nu, meganucleus; pa. nu, micronucleus; trch, trichocysts." -Parker, 1900

Paramoecium Caudatum

"Paramoecium caudatum. A, the living animal from the ventral aspect; B, the same in optical section:…

"Vorticella. A, B, living specimens in different positions; C, optical section; D1, D2, diagrams illustrating coiling of stalk; E1, E2, two stages in binary fission; E3, free zooid; F1, F2, division into mega- and microzooids; G1, G2, conjugation; H1, multiple fission of encysted form; H2, H3, development of spores; ax. f, axial fibre; cort, cortex; cu, cuticle; c. vac, contractile vacuole; d, disc; gull, gullet; m, microzooid; mth, mouth; nu, meganucleus; per, peristome." -Parker, 1900

Vorticella

"Vorticella. A, B, living specimens in different positions; C, optical section; D1, D2, diagrams illustrating…

"General view of the viscera of a male frog, from the right side. a, stomach; b, urinary bladder; c, small intestine; cl, cloacal aperture; d, large intestine; e, liver; f, bile duct; g, gall bladder; h, spleen; i, lung; k, larynx; l, fat body; m, testis; n, ureter; o, kidney; p, pancreas; s, cerebral hemisphere; sp, spinal cord; t, tongue; u, auricle; ur, urostyle; v, ventricle; v.s, vesicula seminalis; w, optic lobe; x, cerebellum; y, Eustachian recess; z, nasal sac." -Parker, 1900

Frog Viscera

"General view of the viscera of a male frog, from the right side. a, stomach; b, urinary bladder; c,…

"Transverse section through the wall of a cylinder (parallel with the course of the canals), showing one incurrent canal (IC), and one radial (R) throughout their length; sp, triradiate spicules; sp', oxeote spicules of dermal cortex (dc); sp'', tetraradiate spicules of gastral cortex (gc); ec, ectoderm; en, endoderm; pm, pore membrane; pp, prosopyles; ap, apopyle; di, diaphragm; exc, excurrent passage; PG, paragastric cavity; em, early embryo; em, late embryo. The arrows indicate the course of the water through the sponge." -Parker, 1900

Sycon Gelatinosum

"Transverse section through the wall of a cylinder (parallel with the course of the canals), showing…

"Vertical section of a fresh-water sponge (Spongilla), showing the arrangement of the canal-system. C, ciliated chambers; DP, dermal pores; Ex, excurrent canals; GO, openings of the excurrent canals; PG, paragastric cavity; SD, subdermal cavities; O, osculum." -Parker, 1900

Spongilla

"Vertical section of a fresh-water sponge (Spongilla), showing the arrangement of the canal-system.…

"Hormiphora (Cydippe) plumosa. A, from the side; B, from the aboral pole. mth, mouth; s. pl, swimming plates; t and b, tentacles." -Parker, 1900

Hormiphora Plumosa

"Hormiphora (Cydippe) plumosa. A, from the side; B, from the aboral pole. mth, mouth; s. pl, swimming…

"Idyia roseola. Seen from the broad side, half natural size. a, anal opening; b, lateral tube; c, circular tube; d, e, f, g, h, rows of paddles." -Parker, 1900

Idyia Roseola

"Idyia roseola. Seen from the broad side, half natural size. a, anal opening; b, lateral tube; c, circular…

"Asterias rubens. Digestive system. an, anus; card. st, cardiac division of the stomach; int. caec, intestinal caeca; madr, madreporite; ply. caec, pyloric caeca; pyl. st, pyloric division of the stomach." -Parker, 1900

Common Starfish

"Asterias rubens. Digestive system. an, anus; card. st, cardiac division of the stomach; int. caec,…

"Transverse section of thorax of crayfish, diagrammatic. abm, ventral abdominal muscles; bf, leg; bm, ventral nerve-cord; d, intestine; dbm, dorsal muscles of abdomen; ep, wall of thorax; h, heart; k, gills; kd, gill-cover; l, liver; ov, ovary; pc. pericardial sinus; sa. sn, sternal artery; vs, ventral sinus. The arrow shows the direction of the blood-current." -Parker, 1900

Crayfish Thorax

"Transverse section of thorax of crayfish, diagrammatic. abm, ventral abdominal muscles; bf, leg; bm,…

"Three stages in the development of Apus. fs, frontal sensory organ; L, digestive gland; s, carapace; 1-4, cephalic appendages; I-XIII, body segments and appendages." -Parker, 1900

Apus Stages

"Three stages in the development of Apus. fs, frontal sensory organ; L, digestive gland; s, carapace;…

"Helix nemoralis. an, anus; gen. ap, genital aperture; oc. tent. posterior eye-bearing tentacles; pulm, opening of pulmonary sac; tent, anterior tentacles." -Parker, 1900

Snail Parts

"Helix nemoralis. an, anus; gen. ap, genital aperture; oc. tent. posterior eye-bearing tentacles; pulm,…

"Cypraea moneta (Cowrie). Showing the mantle, provided with marginal tentacles, partly enveloping the shell. Br, branchia; M, M, mantle; F, foot; T, tentacles at the edge of the mantle." -Parker, 1900

Money Cowry

"Cypraea moneta (Cowrie). Showing the mantle, provided with marginal tentacles, partly enveloping the…

"Doris (Archidoris) tuberculata. a, anus; br, branchiae; m, penis; rh, rh, tentacles." -Parker, 1900

Archidoris Tuberculata

"Doris (Archidoris) tuberculata. a, anus; br, branchiae; m, penis; rh, rh, tentacles." -Parker, 1900

"Shell-bearing Pteropoda. f, f, fins; l, liver; o, ovary; sh, shell." -Parker, 1900

Pteropoda

"Shell-bearing Pteropoda. f, f, fins; l, liver; o, ovary; sh, shell." -Parker, 1900

"Patella vulgata, seen from the ventral side. f, foot; g.l, circlet of gill lamellae; m. e, edge of the mantle; mu, attachment muscle; sl, slits in the attachment muscle; sh, shell; v, efferent branchial vessel; v', aorta; ve, smaller vessels." -Parker, 1900

Limpet

"Patella vulgata, seen from the ventral side. f, foot; g.l, circlet of gill lamellae; m. e, edge of…

"Section of the shell of Nautilus pompilius, showing the septa (s, s), the septal necks (s. n., s. n.), the siphuncle (si, represented by dotted lines), and the large body-chamber (ch)." -Parker, 1900

Chambered Nautilus

"Section of the shell of Nautilus pompilius, showing the septa (s, s), the septal necks (s. n., s. n.),…

"Oral surface of a male (A) and female (B) Nautilus pompilius in an expanded state. a, shell; b, external annular lobe carrying 19 tentacles on each side, and anteriorly enlarged to form the hood; c, right and left inner lobes, each carrying 12 tentacles in the female, and divided in the male into two parts; d, posterior inner lobe; e, oral cone; f, tentacles of the outer annular lobe projecting from their sheaths; g, two anterior tentacles of this lobe belonging to the hood; i, superior, k, inferior, ophthalmic tentacle; l, eye; n, lamellated organ on the posterior inner lobe of the female; o, funnel; p, spadix; q, antispadix." -Parker, 1900

Nautilus Oral Surface

"Oral surface of a male (A) and female (B) Nautilus pompilius in an expanded state. a, shell; b, external…

"Amphioxus lanceolatus. A, ventral; B, side view of the entire animal. an, anus; atrp, atriopore; cd. f, caudal fin; cir, cirri; dors. f, dorsal fin; dors. f. r. dorsal fin-rays; gon, gonads; mtpl, metapleure; myom, myomeres; nch, notochord; or. hd, oral hood; vent. f, ventral fin; vent. f. r, ventral fin-rays." -Parker, 1900

Lancelet

"Amphioxus lanceolatus. A, ventral; B, side view of the entire animal. an, anus; atrp, atriopore; cd.…

"Amphioxus lanceolatus. A, transverse section of the pharyngeal region. a, dorsal aorta; b, atrium; c, notochord; co, coelom; e, endostyle; g, gonad; kb, branchial lamellae; kd, pharynx; l, liver; my, myomere; n, nephridium; r, neuron or dorsal nerve tube; sn, spinal nerves; sp, gill-slits. B, transverse section of the intestinal region; atr, atrium; coel, coelom; d. ao, dorsal aorta; int, intestine; myom, myomere; nch, notochord; neu, neuron; s. int. v, subintestinal vein." -Parker, 1900

Lancelet Section

"Amphioxus lanceolatus. A, transverse section of the pharyngeal region. a, dorsal aorta; b, atrium;…

"Longitudinal section of a tooth, semi-diagrammatic. PH, pulp cavity; PH', opening of same; ZB, dentine; ZC, cement; ZS, enamel." -Parker, 1900

Tooth Section

"Longitudinal section of a tooth, semi-diagrammatic. PH, pulp cavity; PH', opening of same; ZB, dentine;…

"Diagrammatic horizontal section of the eye of man. c, cornea; ch. choroid (dotted); C. P, ciliary processes; e. c, epithelium of cornea; e. cj, conjunctiva; f. c, yellow spot; I, iris; L, lens; ON, optic nerve; OS, ora serrata; o-x, optic axis; p. c. R, anterior non-visual portion of retina; P. E, pigmented epithelium (black); R, retina; sp. l, suspensory ligament; Scl, sclerotic; V. H, vitreous body." -Parker, 1900

Human Eye

"Diagrammatic horizontal section of the eye of man. c, cornea; ch. choroid (dotted); C. P, ciliary processes;…

The dissection of a female sea lamprey or Petromyzon marinus. ad, anterior dorsal cartilage; an, annular cartilage; au, auricle; bd, bile-duct; bp', basal plate; br, brain; cd, cardinal vein; d.ao, dorsal aorta; dm, dorsal muscles; ea, external gill aperture; ft, fibrous tissue; gr, groove canal; hp, basal plate to fontanelle; hv, hepatic vein; i, integument; i.ju; inferior jugular vein; int, intestine; ju, jugular; lg, lingual cartilage; lr, liver; m, buccal vavity; mv, median ventral cartilage; my, spinal cord; na, olfactory sac; na', pituitary pouch; na'', nasal aperture; na.c, nasal capsule; nc, notochord; n.ca, spinal canal; oc, cranial roof; oes, gullet; o.f, buccal funnel; ov, ovary; pc, pericardium; pd, posterior dorsal cartilage; pmt, protractor muscle of tongue; rmt; retractor of tongue; rt, respiratory tube; ss, lymph sinus; sv, sinus venosus; t, tongue; v, ventricle; v.ao, ventral aorta; vl, velum; vm, ventral muscles. -Parker, 1900

Lamprey Anatomy

The dissection of a female sea lamprey or Petromyzon marinus. ad, anterior dorsal cartilage; an, annular…

"Salmo fario, the entire skull, from the left side. art, articular; branchiost, branchiostegal rays; dent, dentary; epiot, epiotic; eth, supra-ethnoid; fr, frontal; hyom, hyomandibular; intop, inter-opercular; pal, palantine; par, parietal; pmx, pre-maxilla; praop, pre-opercular; pt, pterygoid; pter, pterotic; Quad, quadrate; socc, supra-occipital; sphot, sphenotic; subop, sub-opercular; sympl, symplectic; Zunge, basi-hyal." -Parker, 1900

Fish Skull

"Salmo fario, the entire skull, from the left side. art, articular; branchiost, branchiostegal rays;…

"Rana esculenta. The brain. A, from above; B, from below. ch. opt, optic chiasma; HH, cerebellum; Hyp, pituitary body; Inf, infundibulum; L. ol, olfactory lobe; Med, spinal cord; MH, mid-brain; NH, medulla oblongata; Th. opt, optic thalamus; Tr. opt, optic tract; VH, cerebral hemisphere; ZH, diencephalon; I-X, cerebral nerves; XII. (1), hypoglossal (first spinal) nerve." -Parker, 1900

Edible Frog Brain

"Rana esculenta. The brain. A, from above; B, from below. ch. opt, optic chiasma; HH, cerebellum; Hyp,…

"Heart of monitor (Varanus) dissected to show the cavity of the ventricle and the vessels leading out from it. A. A', auricles; Ao, dorsal aorta; Ap. Ap', pulmonary arteries; Asc, subclavian artery; Ca. Ca', carotids; RA. RA, roots of dorsal aorta; Trca, innominate trunk; V, ventricle; +, right aortic arch; *, left aortic arch." -Parker, 1900

Monitor Lizard Heart

"Heart of monitor (Varanus) dissected to show the cavity of the ventricle and the vessels leading out…

"Brain of alligator, from above. B. ol., olfactory bulb; G. p, epiphysis; HH, cerebellum; Med, spinal cord; MX, optic lobes; NH, medulla oblongata; VH, cerebral hemispheres; I-XI, cranial nerves; 1, 2, first and second spinal nerves." -Parker, 1900

Alligator Brain

"Brain of alligator, from above. B. ol., olfactory bulb; G. p, epiphysis; HH, cerebellum; Med, spinal…

"Poison apparatus of rattlesnake. A, eye; Gc, poison-duct entering the poison-fang at +; Km, muscles of mastication partly cut through at *; Mc, masseter or constrictor muscle; Mc', continuation of the constrictor muscle to the lower jaw; N, nasal opening; S, fibrous poison-sac; z, tongue; za, opening of the poison-duct; zf, pouch of mucous membrane enclosing the poison-fangs." -Parker, 1900

Rattlesnake Poison Apparatus

"Poison apparatus of rattlesnake. A, eye; Gc, poison-duct entering the poison-fang at +; Km, muscles…

"Columba livia. Sacrum of a nestling (about fourteen days old), ventral aspect. c1, centrum of first sacral vertebra; c1, centrum of fifth caudal; c. r, first sacral rib; l1, centrum of first lumbar; l3, of third lumbar; s1, of fourth lumbar; s3, of sixth lumbar; tr. p, transverse process of first lumbar; tr. p', of fifth lumbar; tr. p'', of first sacral." -Parker, 1900

Rock Pigeon Sacrum

"Columba livia. Sacrum of a nestling (about fourteen days old), ventral aspect. c1, centrum of first…

"Columba livia. Left manus of a nestling. The cartilaginous parts are dotted. cp. 1, radiale; cp. 2, ulnare; mcp. 1, 2, 3, metacarpals; ph. 1, phalanx of first digit; ph. 2, ph. 2', phalanges of second digit; ph. 3, phalanx of third digit; ra, radius; ul, ulna." -Parker, 1900

Rock Pigeon Manus

"Columba livia. Left manus of a nestling. The cartilaginous parts are dotted. cp. 1, radiale; cp. 2,…

"A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery; br. v, bachial vein; c. c, common carotid; ju, jugular; l. au, left auricle; l. p. a, left pulmonary artery; l. vn, left ventricle; pc. v, left pre-caval; ptc, post-caval; p. v, pulmonary veins; r. au, r. au', right auricle; r. p. a, right pulmonary artery; r. prc, right pre-caval; r.r vn, right ventricle." -Parker, 1900

Pigeon Heart

"A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery; br. v, bachial…

"Columba livia. The brain; A, from above; B, from below; C, from the left side. cb, cerebellum; c. h, cerebral hemispheres; f, flocculus; inf, infundibulum; m. o, medulla oblongata; o. l, optic lobes; o. t, optic tracts; pn, pineal body; II-XIII, cerebral nerves; sp. 1, first spinal nerve." -Parker, 1900

Rock Pigeon Brain

"Columba livia. The brain; A, from above; B, from below; C, from the left side. cb, cerebellum; c. h,…

"Lepus cuniculus. Brain. A, dorsal view; B, ventral; b. o, olfactory lobe; cb', median lobe of cerebellum (vermis); cb'', lateral lobe of cerebellum; cr, cauro-cerebri; ep, epiphysis; f. b, parencephala; f. p, longitudinal fissure; h. b, hind-brain; hp, hypophysis; m. b, mid-brain (corpora quadrigemina); md, medulla oblongata; p.v, pons Varolii; i-xii, cranial nerves." -Parker, 1900

Rabbit Brain

"Lepus cuniculus. Brain. A, dorsal view; B, ventral; b. o, olfactory lobe; cb', median lobe of cerebellum…

"Lepus cuniculus. Longitudinal vertical sectioin of the brain. cb, cerebellum, showing arbor vitae; c. c, crus cerebri; ch1, parencephalon; ch2, temporal lobe; c. ma, corpus mammillare; f. m, foramen of Monro; inf, infundibulum; ly, lyra; m. o, medulla oblongata; o. ch, optic chiasma; olf, olfactory lobe; pty, pituitary body; vl. ip, velum interpositum; v. vn, valve of Vieussens; II, optic nerve." -Parker, 1900

Rabbit Brain

"Lepus cuniculus. Longitudinal vertical sectioin of the brain. cb, cerebellum, showing arbor vitae;…

"Teeth and Scales of Carboniferous Fish." -Taylor, 1904

Carboniferous Fish Fossils

"Teeth and Scales of Carboniferous Fish." -Taylor, 1904

Section through the bones and ligaments of the foot. The parts of the joints are well shown.

Bones and Ligaments of the Foot

Section through the bones and ligaments of the foot. The parts of the joints are well shown.

"Lengthwise section of a squash seed. c, hypocotyl; cot, cotyledon; e, endosperm; h, hilum; p, plumule; t, testa." -Bergen, 1896

Squash Seed

"Lengthwise section of a squash seed. c, hypocotyl; cot, cotyledon; e, endosperm; h, hilum; p, plumule;…

"Young seedling of windsor bean. c, cotyledon; r, root; s, stem." -Bergen, 1896

Windsor Bean Seedling

"Young seedling of windsor bean. c, cotyledon; r, root; s, stem." -Bergen, 1896

"Lengthwise section of grain of corn. y, yellow, oily part of endosperm; w, white, starchy part of endosperm; p, plumule; s, the shield (cotyledon), in contact with the endosperm for absorption of food from it; r, the primary root." -Bergen, 1896

Corn Grain

"Lengthwise section of grain of corn. y, yellow, oily part of endosperm; w, white, starchy part of endosperm;…