LIST OF PLATES. 



ANIMAL. 



Alligator. 



Spilotes. 

 Nerodia. 



Testudo. 

 



Rana. 

 Menopoma 



Siren. 



SUBJECT. AMPLIFICATION. 



Vagus Magnified 100 Diameters. 



; 30 



40 



Post. Region Med. Obi. 

 Eminentia Acoustica. 



Hypoglossus. 



Med. Obi. & Sp. cord. 



Abducens 



Trigeminus. Motor R. 

 Near the Acoustic Nerves. 

 Trigeminus. Motor R. 

 Just behind the 4th Vent. 

 Vagus 



4 

 40 



40 



5 

 46 



'5 



'5 

 60 



'5 



NO. OF PL. 



LI. 



LII. 



LIII. 



LIV. 



LV. 



LVI. 



LVII. 



LVIII. 



LIX. 



LX. 



LXI. 



LXII. 



CEREBELLUM. 



Alligator. Vert. Longit. Section. Magnified 26 Diameters. LXIII. 



Anolius. " 



Phrynosoma. '* 



Scotophis. " 



Cistuda. " 



Rana. " 



Menopoma. " 



OPTIC LOBES. 



a 

 tt 

 a 

 tt 

 tt 

 a 



Heloderma. Vert. Trans. Section. Magnified 39 Diameters. LXX. 

 Phrynosoma. " 30 " LXXI. 



Anolius. 41 " LXXI I. 



Nerodia. 30 " LXXIII. 



30 " LXXIV. 



