HI, Leffmann—Geyser Waters and Deposits. 105 
Weight before heating _... *163 gram. 
Weight after heating... --- 155 gram = water 4:94 
OR So SU Vee oe "129 gram = 79°1% 
Traces of AJ,O,, Fe,O, and CaO. 
_ The deposit is probably gelatinous silica mixed with some 
impurities. 
2. Jug Spring. 
Calo Garbponete if. ee 0-791 
MOGI carbonate fo oo See oa 49°140 
POdIO BubNate oo 6 20 i oe fa 2°121 
Sodium chloride. -__-.._- 31°570 
ee) aes _. 14°560 
98°182 
h 
kept perfectly quiet. On evaporating the water it gelatinizes 
markedly before it becomes entirely dry. 
SOdin Ghlitae 2 72°180 
Calcium MUD AALG ooo oe eee 3°220 
UCalcinin. Ghiomae.< 4... ck ee a 4°060 
Silite oe ee 53°760 
143°220 
4. Deposit from Bronze Spring, Shoshone Geyser Basin.—This 
aon is in convoluted layers with bronze-colored surfaces. 
. 
© powder is fawn-colored. Hardness 5’. 
Sides Se ee 83°71 
tron oride aiid alanviina & 22 oo... te 
7 * 
Organic matter and water-------------- 
On heating the powder in the drying oven it loses five (5) 
per cent; a high heat causes it to turn gray, and give out a 
distinct odor of nitrogenous organic matter. The iron oxide 
and alumina appear to be in union with the organic matter. 
Am. Jour. yee: Serres, Vou. XXV, No. 146.—Fxprvary, 1883. 
