OTHER FIGURES OF THE BRAIN. 493 



(18) Owen : 25, PI. 20 ; Fig. 1-3, dorsal, lateral and mesal aspect of the brain of the 

 Cheetah Felis jubata, shaded ; Fig. 4^-6, the same of the cat, outline. The former are 

 somewhat vague, especially as to the Sylvian fissure ; the latter are clear, and correct 

 excepting the non-extension of the F. postrhinalis in Fig. 5, and the indication upon Fig. 6 

 of an improbable fissure near the caudal end of the hemisphere. 



(19) Owen : A, III ; Fig. 83, dorsal aspect of cat's brain. Unacknowledged, but evi- 

 dently copied from the very poor figure of Bell (A). 



(20) Owen : A, III ; Fig. 86, the mesal aspect of the right hemisphere ; apparently 

 original. A good outline diagram, excepting the presence of the line marked (13), pur- 

 porting to represent the F. lambdoidalis, and apparently the same as shown in Fig. 3 and 6. 

 Whether or not such a fissure exists in the Cheetah, or whether, if present in any feline 

 brain, it is the homologue of the " lambdoidal " or " occipito-parietal " fissure, need not be 

 discussed here ; but among the many (over 200) cat's brains examined by us, none have 

 presented any fissure in that region. Probably the line was accidentally introduced or 

 may represent a vascular furrow ( 1341). 



(21) Owen : A, III ; Fig. 91, the lateral aspect ; an outline diagram, apparently 

 reduced and slightly changed from the same author's Fig. 5 (25, PI. 20). The superorbi- 

 talis, however, has disappeared, and the diagonalis is made, incorrectly, to join the rhinalis. 



(22) Pansch : 1, Taf. XIV, XV ; Fig. 23-38, dorsal, lateral and mesal aspects of the 

 hemispheres of adult, new-born and foetal cats. These are excellent original diagrams of 

 the fissures. 



(23) Serres : A, PI. XIV ; Fig. 264, 265, the lateral and dorsal aspects of what pur- 

 ports to be the brain of a lion, but, as remarked by Leuret (Leuret et Gratiolet, A, PI. 5, 

 p. 10), is really that of a cat. 



(24) Spurzheim : A, PI. IV ; Fig. 5, dorsal aspect of a somewhat distorted brain. 



(25) Stowell, T. B. : 1 ; Fig. 1, 2, ventral and lateral aspects of the cat's brain, with 

 special reference to the ectal origins of the cranial nerves ; the fissures and other parts 

 are shown diagrammatically ; Fig. 3-12, ectal nerve origins and distribution of the vagus. 



(26) Tiedemann, F. : A, Tab. Ill ; Fig. 3-5, dorsal, ventral and mesal aspects of a 

 lion's brain ; original and mainly accurate ; Fig. 6, the brain " Felis nondum adulti, quod 

 cerebro Leonis persimile est." Unless the author had positive knowledge as to the imma- 

 turity of this brain, it must be regarded as that of an adult domestic cat. 



(27) Wilder : 11; PI. I, Fig. 1, 2, portions of the cerebellum, showing the vermis 

 and the Lobulus appendiculfiris ; PI. Ill, Fig. 15, 17, dorsal and lateral aspects of the 

 hemispheres, diagrams of the fissures ; PI. IV, Fig. 18, 19, lateral aspect, young Asiatic 

 and African lions, fissural diagrams. 



(28) Wilder : 8 ; Fig. 1, 2, fissural diagrams of the lateral and mesal aspects. 



(29) Wilder : 14: ; PI. 1-3, Fig. 1-5, the dorsal, lateral, ventral, mesal, cephalic and 

 caudal aspects of the entire brain or of the hemispheres ; PI. 3, 4, Fig. 7-20, sections and 

 dissections illustrating the gross anatomy. 



THE CEREBRUM AND ITS FISSURES. 



1335. Form of the Cerebrum. As compared with that of 

 most dogs, the cat's cerebrum is remarkable for its width. The 

 average width is 34-37 mm. With four well preserved adult brains, 

 taking the width at 100 as the standard, the lengths were respect- 

 ively 93, 97, 100 and 103, while the heights were 75, 67, 71 and 72. 

 In round numbers, then, the lateral and longitudinal dimensions of 



