THE BKAIX IX THE EDENTATA. 283 



To Professor Max Weber and Professor Ste\yart I miist here express my deeiJ sense of 

 gratitude for their generosity in plaeing such Aahiahle material at my disposal, and in 

 addition I must thank the latter gentleman for granting me for some weeks all the 

 facilities which his laboratory offers. 



My indebtedness for so much material for this research and the opportunities for making 

 use of his laboratory is among the least of my many obligations to Professor Howes, 

 who has constantly guided me in the search for literatui'e, and has ever been ready to 

 give me the benefit of his valuable advice. It is with the greatest pleasure that I take 

 this opportunity of acknowledging all this kindly consideration. 



Literature. 



Reckoned by the number of memoirs Avhich have appeared upon the anatomy of the 

 brain in the Edentata, it must be confessed that the literature is by no means incon- 

 siderable; but v/hen we j^roceed to sum up the positive additions to exact knowledge, we 

 are bound to confess that an acquaintance with the Edentate brain derived from this 

 bulky mass cannot be otherwise than very liazy. 



In the following table these contribiitious to our knowledge of this subject are arranged 

 in chronological order : — 



P. TiEBEMANN. — ' Icoues Cerebri Simiarum et quorumdam Mammalium rariorum.' 

 Heidelberg, 1821. 



Contains figures representing the dorsal and mesial surfaces of the brain of (JJiolieptis didactiflns and the dorsal 

 surface of the brain of Ci/chtitnis Jidacti/lus. 



P. Leuret et P. Gratiolet. — ' Anatomic comparee du Systeme nerveux.' Paris, 

 1839-59. 



Contains the figure of the dorsal surface of the/brain of Brinli/piis IriJarti/lns, and in the text numerous references 

 to the brains of other Edentates. 



WiLHELM VON Rapp. — ' Anatomische Untersuchungen iiber die Edentaten.' Geneva, 

 1843 and 1852. 



The dorsal surfaces of the brains of Cliolcepus and Tdtnsia are represented. 



J. Hyrtl. — " Chlamydophori tnaicati cum Daanpode gymnnro comparati examen 

 anatomicum." Denkschr. d. k. Akad. d. Wiss., Vienna, 1855. 



Contains a few brief notes on the brain of CIilitiin/i!oj>honis, unaccompanied bj' any figures. 



Alessandrini. — " Ceuni suU' Anatoniia del Dasipo minimo, Desm." Mem. Pi. Accad. 

 delle Se. dell' 1st. di Bologna, t. vii. 18-36. 



Contains very brief and unimportant notes on Tatuna. 



W. H. Elower. — " On the Commissiu-es of the Cerebral Hemispheres of the Marsvipialia 

 and Monotremata." Philosophical Transactions, 1865. 



In this classical memoir the mesial surface and a coronal section through the cerebrum of Choloqnis didaciylus 

 have been represented in figures with an exactness whicli is lacking in the eai'lier memoirs. 



W. Turner. — " On the Anatomy of the Brain of Dasi/jnis sexcinctus.'' Jom-nai of 

 Anatomy and Physiology, vol. i. 1867. 



The most complete account we possess of the Ijrain of Dasijpus scJ-'cinctus, illustrated by three figures. 



