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"Diagrammatic cross-section of Cray-fish in the thoracic region, to show relation of circulation and respiration. a, appendage; c, carapace; c.f., flap of carapace overhanging the gills; d, digestive tube; g, gill; h, heart; l, liver; m, body muscles; m', muscles of the appendages; n.c., nerve cord; p.s., paricardial sinus; r, reproductive glands; st, sternal artery; v.a., ventral artery; v.s., ventral blood sinus in which the nerve cord lies." — Galloway

Cray-fish

"Diagrammatic cross-section of Cray-fish in the thoracic region, to show relation of circulation and…

"Central organs of the circulaion, gills, and renal organs of Sepia officinalis. a, aorta; v, vena cava; v' visceral veins; c, systemic heart; d, dilatations of branchial veins on entering the heart; e, branchial hearts; b, branchiae; r, renal organs." — Encyclopedia Britannica, 1893

Cuttlefish Organs

"Central organs of the circulaion, gills, and renal organs of Sepia officinalis. a, aorta; v, vena cava;…

"Diagram of the principal vessels in the circulation of a fish, ventral view. a, aorta; au., auricle; br.a., afferent branchial arteries; br.e., efferent branchial arteries; bu., bulbus (or conus) arteriosus; c, carotid; c.a., caudal artery; c.v.r., right cardinal vein; c.v.l., left cardinal vein; d.a., dorsal artery; d.c., ductus Cuvieri; g, gills; h.v., hepatic vein; h.p., hepatic portal vein; i, intestine; j, jugular vein; k, kidney; l, liver; r.p., renal portal vein; s.v., sinus venosus; v, ventricle." — Galloway

Fish Circulation

"Diagram of the principal vessels in the circulation of a fish, ventral view. a, aorta; au., auricle;…

"Gill of Fish. A, first branchial arch of left side of black-bass: 1, gill-rakers; 2, branchial lamellae. C, same, in cross-section: 7, branchial lamellae; 8, a gill-raker. B, same arch of striped-bass, with appendages removed: 3, 4, 5, and 6, pharyngobranchial, epibranchial, ceratobranchial, and hypobranchial segments." -Whitney, 1911

Parts of Fish Gills

"Gill of Fish. A, first branchial arch of left side of black-bass: 1, gill-rakers; 2, branchial lamellae.…

"Diagram to show the way in which an outgrowing gill-process bearing blood-holding lamellae, may give rise, if the sternal body wall sings inwards, to a lung-chamber with air-holding lamellae. I is the embryonic condition. L is the condition of outgrowth with gl, gill lamellae. A is the condition of insinging of the sternal surface and consequent enclosure of the lamelligerous surface of the appendage in a chamber with narrow orifice—the pulmonary air-holding chamber. pl, Pulmonary lamellae. bs, Blood sinus." — The Encyclopedia Britannica, 1910

Lamellae

"Diagram to show the way in which an outgrowing gill-process bearing blood-holding lamellae, may give…

Containers of liquid measure in comparison: one gallon, quart, pint, and gill.

Liquid Measures

Containers of liquid measure in comparison: one gallon, quart, pint, and gill.

"Embryo of scorpion, ventral view showing somites and appendages. sgc, Frontal groove. sa, Rudiment of lateral eyes. obl, Camerostome (upper lip). so, Sense-organ of Patten. PrGabp1, Rudiment of the appendage of the praegenital somite which disappears. abp2, Rudiment of the right half of the genital operculum. abp3, Rudiment of the right half of the genital operculum. abp4 to abp7, Rudiments of the four appendages which carry the pulmonary lamellae. I to VI, Rudiments of the six limbs of the prosoma. VIIPrG, The evanescent praegenital somite. VIII, The first mesosomatic somite or genital somite. IX, The second mesosomatic somite or pectiniferous somite. X to XIII, The four pulmoniferous somites. XIV, The first metasomatic somite." — The Encyclopedia Britannica, 1910

Scorpio Embryo

"Embryo of scorpion, ventral view showing somites and appendages. sgc, Frontal groove. sa, Rudiment…