A. W. Chase— Oregon Borate of Lime. 289 
The color is milk-white; feel greasy and unctuous. Before the 
blowpipe the substance exhibits the usual green flame. 
The following is the analysis of the two kinds, the hard 
borate found in veins and the boulders or masses: 
Boulders. 
Water 6. So OE I ee ee 22°18 
Bie 2 SS a 29°96 
Albaliog .0 4 Siw, 2 2 
Chicrides: 2 5 ea eae traces 
Boracie acid ___. .___ _... 47°04—=100°00 
Hard Borate. 
Water. 220 eee 25°00 
MBA Oa Ae 29°80 
Bikghee yo a tra 
Boracic acid __ 45°20—=100°00 
fe 1st. 
It will be seen from the above analysis that soda is entirely 
absent, the composition being purely lime, water, and boric 
transparent nature, covered with little protuberances or pim- 
ples. This substance also gave a green flame with sulphuric 
acid and alcohol. wos 
._ In forming a theory as to the origin of this deposit, it is 
impossible to resist the conclusion that it came from a spring 
of boric acid in the crater of what was probably a mud volcano. 
