> 
3 INDEX, 403 
Secondary granite, 186 
177 
Seybert H. analysis of Pvroxene from Sparta, N. J. 145 i 
Sheet Iron, soldeiieeo 9 s, 
lead, chinese process for making, 391 
Shepard dC.U. Yenite and green feltispar, 251 co 
Slates Artificial, 191 , 
Society Geological, American, se 
for the encouragement of National Wanwy, Paris, 198, 
dustry, St. Gall, 381 
——— for promoting Elementary i instock 199 
mite heet iron, 379 
Sphene, 53 
Steam _—" description of Perkins’ new, 
——_—__——_, application of New prince 
constuction, 116, 332 
—_——-, pen sepbbens of potatoes i in the boilers of, 193 
f by soft iron, 342, 390 
i 7 mes for the ae ea of industry &c. 381 
Stone -morial and sacrifice, 
1 asilicious = petition from N. C. 249 
ses, 
lphur in granite, 
Silphoreted Hydrogen , condensation of, 354 
Sulphurous acid, condensation of, 353 
Sunderland cave, 19 
Superior, ig of Lake, 43 
Switzerland, 
7 
Tale, 55 
Taylor S. account of a rocking eo 201 
, localities of minerals, 253 
Tertiary Jodeervag of America, Essay on, 31 
———— =i om ei 
ts) razi remarks on 
eed: Dr. J. Flora of N. and Middle States, 178 
Tourmaline, 55 
’ 
