Dr. J. L. Smith on Actions of Nitric and Oralic Acids. 373 
Ox. ratio. 
oaks ’ ‘ 64:50 : ‘ 33°41 or 10°66 
: } 25°30 ) : 
Peroxyd of iron, . . 2555 -'* A Le Ie 
‘ ’ 0-43 } 
Man fous ; ‘ ; 0:06 | : é 
ithia, se5f B48 oF (1:00 
Potash and soda, . i 110) 
Loss by ignition, . : 0°30 
99°89 
It will be seen that this forms no exception, and when examined 
pure, has the same composition as spodumene from other localities. 
In fact, so far as the American spodumene is concerned, we be- 
lieve that the specimens from Norwich are the most beautiful that 
have been found anywhere, and we shall take pleasure on some 
early occasion in Robb § eee with good specimens 
from both Norwich and Ste 
36. Petaliie. 
n connection with the analyses of spodumene, it was hi i 
interesting to examine the American petalite. For this pur 
specimen from Bolton, Mass. was selected. The results of 
analyses are,— 
i. Oxygen. 2. Oxygen. 
Silica, . ‘ 17-95 : 40:50 i 77-90 ‘ rod 
umina, “ 16°63 : TAT peo eee 1-7 y. 
Peroxyd of iron, . 0°62 : 0-18 ‘ Pe 051 0715 t Us 
Lime, : é tr. ; . tr. 
Magnesia, 0°21 0-08 0°26 0 
ithia, 3°74 2-07 » 2:27 352 1:94 } 2:18 
Soda, 048 012 5 0°53 4 
‘otasa, . é tr. : % ‘ tr. 
Ignition, . ‘ 0°60 ; ; ; 070 
10023 99°37 
No. 1, gives oxygen fatio 20: 3°92: IT. 
2, yl eae Bae yi: * 
or BS nearly a0: |, ein which we have the formula R* Si 
+ 441 Sit = Silica 78:37, alumina 17 ‘44, lithia 3-40, soda 0-79. 
Arr. XXXIX.—1. Action © 2 a Acid on ig press a 
Potassium and Sodium.—2. Action of Oxalic Acid on 
Nitrates and Chlorids of the same, with a rade sucel pe. 
converting t¢. to the Carbonates.—3. The presence of 
Ovalice Acid enabling Zine to decompose Water; by Prof. 
J. Lawrence Sura, M.D., of Louisville, Ky. 
T1s note is intended as an appendix to my researches for 
determining the alkalies in insoluble silicates in this Journal.* 
During that investigation, many novel and interesting reactions 
were observed, several of which pare hopawedly been alluded to. 
I present here one or two others of so 
* This volume, page on 
