(302 



Corr. Old South Cliurcli, Boston; B. N. II. S. ; Sillimair.s 

 Journal ; American Chemist ; Geolosjical Survey of Xew 

 Jersey; Acatlemy Natural Science; Franklin Institute; 

 College of l^harmacy, and E. D. Cope ; United States Xaval 

 Observatory ; Signal Service Office ; Light House Board ; 

 Botanical Gazette, Hanover, Ind. ; University of California, 

 Berkeley ; and the Brazilian Biographical Annual, Rio de 

 Janeiro. 



The death of Prof. J. S. Hart, aged 67, at his residence in 

 Philadelphia, March 26, 1877, was announced by the 

 Secretary. 



Prof. Frazer exhibited and described the construction and 

 use of a new compass devised by Major Brooks, for field 

 work, to detect and measure local attraction more accurately 

 than the ordinary dipping needle. 



Prof. Frazer communicated a paper on Magnetic Declina- 

 tion. 



The Secretary read a paper, entitled "On the relative ages 

 of the Sun and certain of the Fixed Stars, by Prof. Daniel 

 Kirkwood of Indiana University," which was discussed 

 by the members present. 



The Secretary presented, for Dr. Brinton, a paper, entitled 

 "The Timucua Language, by Albert S. Gatschet." 



The Secretary read a short communication from ^Ir. C. 

 E. Hall, entitled " Contribution to the Paheontological 

 Museum of the Second Geological Survey of Pennsylvania," 

 describing the late discoveries of Eurypterus (hitherto 

 characteristic of the Silurian "Water Lime rocks) in the Sub- 

 carboniferous and Carboniferous of Northern and Western 

 Pennsylvania, by Mr. Carll and Mr. Mansfield. 



Dr. Le Conte read portions of a private letter and de- 

 scribed the activity of the new Society of Sciences at Dav- 

 enport, Iowa ; — on motion the placing of that Society c>n 

 the list of Corresj[)ondents was referred to the Publication 

 Committee. 



On motion the Secretaries were authorized to accept ^Nlr. 

 Sinclair's contract to make for $25 a piece, two i)lates to il- 



