412 



Presents. 



[Mar. 1, 



It seemed probable that this additional centre would be the frontal 

 area itself, but further experiments have proved that this is not the 

 case — at least not necessarily so. For the movement is still obtained 

 on exciting 1 the occipital lobe, or the superior temporal gyrus, even 

 after complete excision of the whole of the frontal area, and indeed 

 of nearly the whole of the so-called motor region on both sides of 

 the brain in front of the fissure of Rolando. It would seem, 

 therefore, that under these conditions the additional centre must be 

 looked for elsewhere — possibly in the grey matter of the corpora 

 quadrigemina, or in the basal ganglia.* 



In this investigation, as well as in that related in the preceding 

 paper, I have received much valuable aid from my assistant, Mr. E. 

 P. France, whose services I desire cordially to acknowledge. 



The expenses have been defrayed by the Association for the 

 Advancement of Medicine by Research. 



Presents, March 1, 1888. 



Transactions. 



Boston : — American Academy of Arts and Sciences. Memoirs. 

 Vol. XI. Part 5. No. 6. 4to. Cambridge, Mass. 1887. 



The Academy. 



Canada : — Geological and Natural History Survey of Canada. 

 Catalogue of Canadian Plants. Part 3. Apetalse. 8vo. Mon- 

 treal 1886. The Survey. 

 Essex Field Club : — The Essex Naturalist. No. 12. 8vo. Buckhurst 

 Hill 1887. The Essex Field Club. 

 Liege : — Societe Royal e des Sciences. Memoires. Ser. 2. Tome 

 XIY. 8vo. Bruxelles 1888. The Society. 

 London : — Anthropological Institute. Journal. Vol. XVII. No. 3. 

 8vo. London 1888. The Society. 

 Geological Society. Quarterly Journal. Vol. XLIV. No. 173. 



8vo. London 1888. The Society. 



Royal College of Physicians. List of Fellows, &c. 1888. 8vo. 



London. The College. 



Royal Microscopical Society. Journal. 1887. Part 6a. 1888. 

 Part 1. 8vo. London-, List of Members, 1888. 8vo. London. 



The Society. 



Royal United Service Institution. Journal. Vol. XXXI. 

 No. 142. 8vo. London 1888 ; List of Members. 1888. 



The Institution. 



* The method employed and the more detailed results of these experiments will 

 be published in an early number of the ' International J ournal of Anatomy and 

 Physiology.' 



