292 Frederick ïilney, 



Fig. 25. Reconstruction showing tlie relations of the hypophysis of chick of 6 days. 

 — 3, optic chiasm; 5, corpora mammillaria , 9, eminentia saccularis; 

 12, pars tuberalis; 14, pars distalis; 24, lateral wall of third ventricle, 



Plate XVI. 



Fig. 26. Projection drawing showing histological character of the pars tuberalis 



in the adult cat. 

 Fig. 27. Projection drawing showing histological character of the pars distalis in 



the adult cat. 

 Fig. 28, Projection drawing showing histological character of pars infundibularis 



in adult cat. 

 Fig. 29. Projection drawing showing histological character of pars tuberalis in 



the adult dog. 

 Fig. 30. Projection drawing showing histological character of pars distalis in the 



adult dog. 

 Fig. 31. Projection drawing showing histological character of pars infundibularis 



in adult dog. 



Plate XVII. 

 Fig. 32. Projection drawing showing histological character of pars tuberalis in 



the adult rabbit. — a) eminentia saccularis ; b) pars tuberalis. 

 Fig. 33. Projection drawing showing histological character of pars distalis in the 



adult rabbit, 

 Fig. 34. Projection drawing showing histological character of pars infundibularis 



in adult rabbit. — a) pars infundibularis; b) processus infundibuli. 

 Fig. 35. Projection drawing showing histological character of pars tuberalis in 



adult rat. — a) pars tuberalis; b) eminentia saccularis. 

 Fig. 36. Projection drawing showing histological character of pars distalis in adult. 

 Fig. 37. Projection drawing showing histological character of pars infundibularis 



in adult rat. 



Plate XVIII. 

 Fig. 38. Projection drawing showing histological character of pars tuberalis in the 



adult sheep. 

 E'ig. 39. Projection drawing showing histological character of pars distalis in the 



adult sheep. 

 Fig. 40. Projection drawing showing histological character of pars infundibularis 



in the adult sheep. 

 Fig. 41. Projection drawing showing histological character of pars tuberalis in the 



adult fowl. — a) pars tuberalis; b) eminentia saccularis. 

 Fig. 42. Projection drawing showing histological character of pars distalis in adult 



fowl. 

 Fig. 43. Projection drawing showing histological character of pars infundibularis 



in adult fowl. — a) pars infundibularis; b) processus infundibuli. 



Plate XIX. 

 Fig. 44. Projection drawing of a transverse section from a 17mm cat embryo show- 

 ing the relation of the tuberai sprouts and the body of the buccal sac 

 to the diencephalon — 25b, body of buccal sac; 27, eminentia saccularis- 

 80, tuberai process (anläge of pars tuberalis). 



