408 INDEX. 
Steam boats, 377—Engine alternating, 90 
Steatile crystalized, 274 
Steel, JohnH. Doctr. on chrysoberyl, 37 
Steel, 376 
Storm, remarkable, at Catskill, account of 125 
Strontian, sulphate of,—-of Lake Erie and the Detroit river, noti- 
tices of, 279-—80—from Erie Analysis of, 324——in sulphate of 
Barytes, 327 ; 
St. Michael, Island of, description of, and its Geological stracture, 
291 ¢ 
Survey, Geological of the county of Rensselaer in the State of 
New York, 189 
Sus scrofa, anecdote of, 309 
T. 
Tale foliated of Vermont, 54 
Tantalite of Haddam, 52 
Tea, 377 | 
Telegraph, improved, dannedic, 314 
Ticonderoga, walls of, 49. 
Titanium, red oxid of, 55 
Torry, Joha, Doct, on the plants of the North West, 56 
Tourmalin, black, Plainfield, 55 
Trisection on the Curves of, 343 
Tropical rains, 375 | 
Tungsten, yellow, oxide of 52—Massive, 187 
\U, 
Use of phosphoric acid in Jaundice, 162 XK 
Vv. . 
tom 
Vatefudiok a remedy for the plague, 196. 
Vienna, 197 
Volcanoes and volcanic substances, Dr. Cooper on, 205 
W. 
Ward’s Sitch atlaae steam engine, 90 
Waters of Lake George, | their transparency and purity, 46—causes 
of, 46 » 
Webb, Thomas H. Mr. on fluor spar, 50—his notice of the mine- 
raid near Providence, 284 
Webster, J. W. Doct. his foreign notices in mineralogy, 25—in 
mineralogy, geology and the ancient arts—243—his description 
of the Island of St. Michael and its geological structure, 251 
Wolf, anecdote of, 310 
Wyoming, description of the valley of, 4 
ZL. 
Zeal for science, 388 
Loiste, 276 
