408 INDEX. 
Temperature, mean, at Salem (Mass.) and at Rome, (Italy.) 386 
Pest, for Platinum, 376 
"hermometers notice of, 3 
Piconderoga, Plumbago of, a 
Titanium, red oxide of Slicoaleareou oxide of, 236 
onsil, concretion from the, 
Porrey, John Doct. ona neve Es of Usnea, 104 
Pully, Doct. on Datura, 2 
Pungsten, yellow oxide of, 235 
urquois and Lazulite, 382 
'ranstation on natural history, 382 
ravels in America, 380 
ioe Mae Hane fee ae Hee Hae fae Har far fae’ 
U. 
Unio on the genu 
Universe on the formation of, 128 
Usnea of Dr. Torrey, 1 
Vv. 
Vindication of Mr. thy claim to the discovery of fluoric 
acid in the condrodite, 3 
Van Rensselaer, J. W. el his notice of fresh water forma- 
tions, 381 
WwW. 
Waterworks a Philadelphia, notice of, 375 
Webster, J. W. Doct. his ne of Doct. Boué’s noti- 
ces of Europe ean Geology, 18 
West or lost Greenland, 3 
Winslow, Miron, Rey. his +a on the minerals of Ceylon, 192 
Wire drawing, 393 : 
- A 4 
Zeolite, 224 | 
irc 
, 29 
Zodiac of Denderah, 200 
