PLATE LXI. 



Class A VE S continued 

 THE PIGEON continued. 



FIG, 1. BRAIN: DORSAL VIEW, x 2. 



o. olfactory lobes : c. cerebral lobes : p. pineal body : op. optic lobes : 

 cl. cerebellum : m. medulla oblongata. 



FIG. 2. BRAIN : VENTRAL VIEW, x 2. 



o. olfactory lobes : c. cerebral lobes : o. t. optic tract : i. infundibulum : 

 op. optic lobes : II.-XIL the various cranial nerves : s. first 

 spinal nerve. 



FIG. 3. BRAIN : DORSAL VIEW : AFTER REMOVAL OF THE CEREBELLUM AND PART 

 OF THE CEREBRAL AND OPTIC LOBES, x 2. 



/. foramen of Monro: c. corpus striatum: t. optic thalamus: o c. 

 optic commissure: v. o. ventricle of the optic lobe : v. 4 - fourth 

 ventricle : p. peduncles of the cerebellum : in. medulla 

 oblongata. 



FIG. 4 BRAIN : SIDE VIEW, x 2. 



o. olfactory lobe : c. cerebral lobe : p. pineal body : cl. cerebellum : 

 /. flocculus: o.l. optic lobe: o. t. optic tract: II.-XIL the 

 various cranial nerves : s. first spinal nerve. 



FIG. 5. BRAIN : LONGITUDINAL SECTION, x 2. 



o. olfactory lobe : c. cerebral lobe : p. pineal body : cl. cerebellum : 

 o. cm. optic commissure : v. 4 fourth ventricle : a. c. anterior 

 commissure : v. 3 third ventricle : o. c. optic chiasma : p. c. 

 posterior commissure : i. infundibulum : py. pituitary body : 

 in. medulla oblongata. 



FIG. 6. URINO-GENITAL SYSTEM : MALE, x . 



t. testis : v. vas deferens : s. seminal vesicle : k. kidney : u. ureter : 

 c. csecum : r. rectum : cl. cloaca, 



FIG. 7. URINO-GENITAL SYSTEM : FEMALE, x $. 



o. ovary: o.d. 1 opening of the oviduct into the body cavity: o.d. 2 

 opening of the oviduct into the cloaca : r. o. rudimentary 

 right oviduct : k. kidney : u. ureter : cl. cloaca. 



