1897.] NEW YORK ACADEMY OP SCIENCES. 335 



of a research extending over several years, and the author dis- 

 cussed the question on four assumptions : 



1. That the atmosphere has a constant density. 



2. That it obeys Boyle's law. 



3. That it obeys the adiabatic law. 



4. That it obeys the law of a perfect gas. 



A very full mathematical expression was given for each case. 



The paper was discussed by W. Hallock and J. F. Kemp. It 

 will appear in the Bulletin of the U. S. Weather Bureau. 



The Section then adjourned. 



J. F. Kemp, Reginald Gordon, 



Secretary. Secretary of Section. 



[Read January 11, 1897.] 



CONTRIBUTION TO THE MYOLOGY OF LEMUR 



BR UNE US. 



By Geo. S. Huntington. ' 



The position of the Lemuroidea in the zoological series, and 

 the question of their relation to the line of descent of the higher 

 Primates, impart peculiar interest to the comparative anatomy 

 of the suborder. We are fortunate in possessing a \Qvy thor- 

 ough and careful memoir on the myology of the Lemuridse by 

 Murie and Mivart, published in 1866 in Vol. VII of the Trans- 

 actions of the London Zoological Society. The authors of this 

 able paper base their conclusions on the examination of eight 

 species, viz.: Lemur catta, L. varius, L. niger, L. xanthomys- 

 tax, L. nigrifrons, Galago crassicaudatus, G. garnettii and G. 

 allenii. They also refer to the monographs and special memoirs 

 by J. Van der Hoefen and F. A. W. Van Campeu on the Potto, 

 J. L. C. Schroeder Van der Kolk and Vrolick on Stenops, Bur- 

 meister on Tarsius, Kingma on Otolicnus peli, Owen and Peters 

 on Cheiromys, and Huxley on Arctocebus. 



The recent examination of a full-grown male specimen of 

 Lemur bruneus (body weight 1,505 grms., brain weight 26 grms.; 

 identified by Dr. W. A. Conklin, late Director of the Zoological 

 Collection, Central Park) has revealed many points of differ- 

 ence from the description of Murie and Mivart, which applies 



