INDEX. 351 



Von Boguslauski, Professor, 157. 



Wayland, Francis, 155. 



Whewell, William, 152. 



Winthrop, R. C, 156, 227, 228, 229, 272, 273. 



Yandell, L. P., 151. 



Zantedeschi, F. C, 229. 



Library of Dr. Bowditch, 182. 



Light, direct, in microscopical researches, 326. 



Lime, phosphate of, 242. 



Lime, phosphate of, analysis of, 261. 



Limnea, 3. 



LovERiNG, Joseph. On the causes of the differences in the strength 

 of ordinary magnets and electro-magnets, of the same shape and 

 size, 105. On the law of continuity, 120. On the aneroid ba- 

 rometer, 186. Electrical experiment, 251. On the connection of 

 electricity with tornadoes, 293. On coronse and halos, 302. 



Lunar tables, new, 271. 



Lynceus, gen., 48. 



latifro7is., D., 48. 



Lysianassa, gen., 208. 



Braziliensis, D., 208. 



Lysianassinae, fam., 208. 



M. 



Machinery for recording motions of the heavenly bodies, 164. 



Maera, gen., 212,213. 



Magnetical experiments, 120, 161, 162. 



Magnets, causes of the difference of strength, when of the same size 



and shape, 105. " 



Manganese, in water of streams. 111, 164. 

 Mansfield coal formation, 270. 

 Mastodon longirostris, 306. 

 Mauvais's Comet, 1. 



Mechanics, fundamental principles of, 111. 

 Medal, King of Denmark's, 3, 110, 147. 

 Medusae, investigations on, 148. 

 Meetings, Annual, 1, 158,231, 266. 

 Melita, gen., 214. 



