394 INDEX. 



Subgen. Lepidocereus, 287. 

 giganteus, 287. 

 Thurberi, 288. 

 Subgen. Pilocereus, 288. 

 Sr-bottii, 288. 



Cestracion, 65. 



Channikg, W. F. On photographic pictures, 2. On the velocity of • 

 sound, 26. On the Ericsson engine, 32. On Magneto-electric 

 machines, 90. 



Chemical analysis, apparatus for, 70. 



Chemical interest, on some points of, connected with the manufacture 

 of ductile iron, 341. 



Circulating system, on the phenomena accompanying the first appear- 

 ance of, 166. 



Cochituate water, change which has taken place in, 173. 



Cochituate water, oil contained in the Crustaceans found in the, 178, 



2u^, tCDO. 



Coins of Athens, 215. 

 Coke of Richmond, 106. 

 Cole, Thomas, decease of, 10. 

 CoMBiUNicATiONS from 



Agassiz, L., 6, 7, 23, 42, 46, 63, 65, 69, 85, 166, 185, 187, 192, 

 194, 204, 221, 319, 325, 347, 353, 356, 379. 



Bacon, J., 178. 



Beck, Charles, 254. 



Bigelow, Jacob, 336. 



Bond, G. P., 186, 194, 251, 386. 



Bowen, Francis, 357. 



Burnett, W. J., 12, 17, 43, 55, 61, 64. 



Caldwell, George C, 349. 



Channing, W. F., 2, 26, 32, 90. 



Cooke, J. P., 70, 83, 86, 90, ;59, 204. 



Durkee, Silas, 168, 320. 



Engelmann, George, 259, 311. 



Eustis, H. L., 10, 22, 251. 



Felton, C. C, 173, 210, 215, 333, 371. 



Gould, A. A., 61, 109, 253. 



Gould, B. A., Jr., 47, 131, 167. 



Gray, Asa, 34, 41, 48, 73, 90, 94, 127, 159, 166, 181, 258, 335. 



