TABLE OF COl!iTBNTB— Continued. page. 



The Verb in American Languages. By Wilhebn von Humboldt. 

 Translated from the unpublished original, by Daniel O. Brinton, 



M.D 333 



Stated 3Ieetmg, March 20, 1S85 354 



Stated Meeting, April 17, 1SS5 356 



On Composite Photography. By W. Curtis Taylor 360 



Contributions from the Laboratory of the University of Pennsj'lva- 

 nia. No. XXIII. On the Vanadates and lodyrite, from Lake 

 Valley, Sierra Co., New Mexico. By F. A. Oenth and Gerhard 



vom Rath 363 



The Chase-Maxwell Ratio. By Pliny E. Chase 375 



Thermo-electro-photo-baric Unit. "Bj Pliny E. Chase 377 



A Contribution to the Ilerpetology of Mexico. By E. D. Cope 379 



Obituary Notice of William S. Vaux. By Philip E. Laic 404 



Second Contribution of Researches among the Batrachia of the Coal 



Measures of Ohio. By E. D. Cope 405 



The Beothuk Indians. First Article. By A. S. GatscJiet 408 



The Comet of 1866 and the Meteors of November 14th. By Prof. 



D. 8. Eirkwood 424 



Stated Meeting, May 1, 1SS5 429 



Stated Meeting, May 15, 1S85 430 



Stated Meeting, June 19, 1SS5 432 



Stated Meeting, July 17, 1SS5 436 



A Great Trap-dyke across Southeastern Pennsylvania. By Prof. 



H. Carvill Lewis {with a map) / 438 



Extract from the By-Laws. 



CHAPTER XII. 



OF THE MAGELLANIC FUND. 



Section 1. John Hyacinth de Magellan, in London, having in the 

 year 1786 offered to the Society, as a donation, the sum of two hundred 

 guineas, to be by them vested in a secure and permanent fund, to the end 

 that the interest arising therefrom should be annually disposed of in pre- 

 miums, to be adjudged by them to the author of the best discovery, or 

 niost useful invention, relating to Navigation, Astronomy, or Natural 

 Philosophy (mere natural history only excepted) ; and the Society having 

 accepted of the above donation, they hereby publish the conditions, pre- 

 scribed by the donor and agreed to by the Society, upon which the said 

 annual premiums will be awarded. 



CONDITIONS OF THE MAGELLANIC PREMIUM. 



1. The candidate shall send his discovery, invention or improvement, 

 addressed to the President, or one of the Vice-Presidents of the Society, 

 free of postage or other charges ; and shall distiuguish his performance 



