472 ANATOMICAL TECHNOLOGY. 



their segments. Synonyms of about twenty of the principal parts 

 are given in 1058, 1059. 



In the following pages ( 1181-1333) the parts of the mammalian 

 brain are enumerated in the alphabetical order of the technical 

 names herein employed. Unless otherwise mentioned, these names 

 are the same as adopted by the senior author (9, 14) ; the ap- 

 parently new terms really differ but little from those in common 

 use ( 1129). 



Following the abbreviation of each name are references to figures 

 and sections in the present work and to the works on Human Anat- 

 omy by Gray and Quain. The principal technical and English 

 vernacular synonyms are then given, with in most cases a brief 

 description or commentary upon the part itself or its designation. 



As has been stated already, our information is far from satisfac- 

 tory, and all parts of the cat' s brain need monographic treatment. 



1181. Alba, (Substantia), alb. 995, 1047 ; Fig. 112, 116 ; PI. Ill, Fig. 13 ; PI. IV, 

 Fig. 14. Gray, A, 60 ; Quain, A, II, 553. 



Syn. Substantia alba, white matter, white or fibrous nervous tissue. 



The alba constitutes the columns of the myelon, most of the ental portions of the cere- 

 brum and cerebellum, and so much of the entire brain as is not formed by the cinerea, 

 which see, 1204 



1182. Albicans, (Corpus), abn. Fig. 115, 116 ; PI. II, Fig. 3, 4 ; PI. Ill, Fig. 11 ; 

 1161. Gray, A, 621 ; Quain, A, II, 535. 



Syn. Corpus caudicans, corpus mammillare, bulbus f ornicis. 



The albicantia are a pair of white elevations a little cephalad of the pons and overhang 

 ing the postperforatus. They are distinct, but less so than in man. For their relation 

 to the Columns fornicis, see 1207. 



1183. Arachnoidea, (Membrana), arch. Fig 112, H ; 1077. Gray, A, 608 ; Quain, 

 A, II, 519 ; Westbrook, 1, 348. 



Syn. Arachnoideus, meninx media, tunica serosa. 



Like the pia, this membrane needs thorough examination in the cat 



1184. Arbor vitae, arb. vt.Fig. 88, 117 ; PI. II, Fig. 4. Gray, A, 634 ; Quain, A, 

 II, 519. 



The ectal foliation of the cerebellum gives to the surface of a dorso-ventral section a 

 tree -like appearance, to which the above name is applied. 



1185. Aula (az.\ a. Fig. 110-112 ; PI. II, Fig. 4 ; PL III, Fig. 13 ; PI. IV, Fig. 16 ; 

 1065, 1145. Meynert (Strieker, A, Fig. 253) ; Balfour, A, II, Fig. 257. 



Syn. " Le vestibule des ventricules lateraux " Milne-Edwards, A, XI, 305. 



Cavity of the prosencephalon pritnitivum Mihalkovics, A, 30. 



Cavity of the " secundiires vorderhirnblaschen " Mihalkovics, A, PI. 1, Fig. 1. 



Cavity of the " unpaaren grosshirnblase " Lo'we, A, 93. Fig. 11, 12, " es." 



Mesal portion of the cavity of the " lobus communis " Huxley, 1, 00. 



Mesal portion of "Foramen commune anterius " Todd, A, 676; Quain, A, II, 544, 

 and other writers, according to Bell, B, PI. X. 



" Iter ad tertium ventriculum " Monro, A, 9. 



