INDEX. 



357 



Sapphirina oraZis, D., 42. 



ovata, D., 42. 



ovato-lanceolata, D., 44. 



splendens, D., 42. 



tenella, D., 45. 



versicolor^ D., 45. 

 Saturn, eighth satellite of, 4, 5, 139, 147. 

 Saturn, rings of, 264, 265. 

 Saturn, Satellites of, 304. 

 Saturn, theory of, 255. 



Schumacher, Professor, position of, 146. Death of, 255, 262, 266. 

 Scrihella^ gen., Dana, 10, 19. 

 abbreviata, D., 20. 

 scriba^ D., 20. 

 setiger, D., 20. 

 Segments of Crustacea, table of, 55. 

 Service-Pipes, metallic, 95. 

 Shaw, Lemuel. On the explosion of burning-fluids, 317 : and the 



importance of alcohol, 319. 

 Sida, gen., 48. 



angusta, D., 48. 

 Sigillaria, 263. 

 Siluridee, 238. 



Smithsonian Institution, 260. 

 Solar index, 61. 

 SpexilUgus, gen., Dana, 58. 



curticaudus, D., 58. 

 Spermatozoa, 238. 

 Spheroidal state of bodies, 239. 

 Spica, a double star, 235. 

 Stars, double, 144. 

 Stars, fixed, occultations of, 185. 

 Statutes, amendments of, 163, 297. 

 Staurophora, new species of, 149. 

 Steam, properties of, 129. 

 Stenia, gen., Dana, 209. 



Magellanica., D., 209. 

 Stereoptene, 199. 

 Struvite, 198. 



