Fig. 287— Columba livia. Dissection from the right side. The body-wall, with 

 the vertebral column, sternum, brain, etc., are in sagittal section : portions of the 

 gullet and crop are cut away and the cloaca is opened; nearly the whole of the 

 ilium is removed, and the duodenum is displaced outwards, a. ao, aortic arch; 

 bd. I, bd. 2, bile-ducts; b. fabr, bursa Fabricii; cbl, cerebellum; ccc , right 

 ccecum; cpdm, coprodaeum; cr, cere; crb. h, left cerebral hemisphere; crfi, 

 crop; cr. 7>. /, first cervical vertebrae; di. coe, diacccle; dj/t, dentary; dito, 

 duodenum; cits. afi, aperture of Eustachian tubes; giz t gizzard (dotted behind 

 the liver); gl, glottis; gul, gullet; ilin, ilium; i. orb. sfi, inter-orbital septum; 

 kd, right kidney; lug, right lung; Ir, liver (right lobe) ; ?ia, bristle passed from 

 nostril into mouth; obi. sefi, oblique septum; 0. gt, oil gland; ficd, pericardium; 

 fimx, pre-niaxilla: fin, pancreas; fin. b, pineal body; find. /-j>, pancreatic 

 ducts ; fir. cv y right pre-caval ; firdm, proctodaeum ; firvn, proven triculus 

 (dotted behind liver) ; fit. cv, post-caval; fiiy. b, pituitary body; fiyg. st, pygo- 

 style; r. an, right auricle; r. br, right bronchus; ret, rectum; r. vnt, right 

 ventricle; sfi. cd, spinal cord; spl, spleen (dotted behind liver ; s. rhb, sinus 

 rhomboidalis: s. ser, syn-sacrum; st, carina sterni; syr, syrinx; th, v. /, first, 

 and th. v-j, fifth thoracic vertebrae: tng, tongue; tr, trachea; is, right testis; 

 ur, aperture of left ureter; ltrdm, urodaeum; v. df> aperture of left vas deferens. 

 475 



