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ANATOMY OF THE CAT. 
Fig. 492.—Anatomy of the Cat. D, diaphr: ; Ht, heart; Zu, lung; plc, pleural cavity; V, vena cava superior; V’, vena jugu- 
laris ; c’, branch of the external ; ¢”, branch of the internal carotid; 7+, trachea ; S, sympathetic ganglia; Oe, esophagus; v.a, vena 
azygos ; M, mediastinum ; Ps, psoas muscle; Jn, intestine; Hi, kidney ; Ov, ovary; Ut, ureter ; Ovd, oviduct ; Sa, sacrum; Ree, rec- 
tum; U¢, uterus; Ur, urethra; Bi, bladder; Om, omentum; S¢, stomach ; i, liver. 
Fig. 492, II.—Median longitudinal section of the brain. A, medulla oblongata; C2. cerebellum ; Q, corpora quadrigemina ; p, pin- 
eal gland 3 @, cerebrum or hemisphere ; Z, olfactory lobe ; ¢c.a, anterior commissure ; op, optic nerve ; m.c, middle commissure 3 ¢.¢, Cor- 
pus callosum. i . 
Fig. 492, III.—Median vertical section of the eye, diagrammatic. 1, optic nerve ; A, posterior chamber, containing the vitreous hu- 
mor ; 2, corpus ciliare ; 8, lens, partly covered in front by the pigmented iris ; 4, anterior chamber, containing the aqueous humor ; 5, 
cornea. The walls of the chamber A consist of three layers, represented by three lines, the outer the sclerotic ; the middle, the cho- 
toid ; the inner, the retina.—Drawn by C. 8, Minot, 
