266 



QUICKSILVER DEPOSITS OF THE PACIFIC SLOPE. 



When this analysis is compared with those of the waters of Sulpluir 

 Bank it is manifest that there is a very close resemblance. Taking into 

 consideration also that the waters Avhicli must formerh^ have issned from 

 Little Sulphur Bank flowed into Bora.x Lake, it may be considered absolutely 

 certain that the formerly active springs of Little Sulphur Bank furnished 

 the supply of borax now practically exhausted, and that there will be no re- 

 newal of this supply unless the Little Sulphur Bank should again become 

 a flowing spring. To bore wells in Borax Lake is useless. Possibly, how- 

 ever, a hole bored into the Little Sulphur Bank would bring about a re- 

 newed flow of dilute solution of borax, which by concentration under the 

 hot summer sun in Borax Lake would yield the salt in profitable quantities. 



Fli;. 6. n.'nilriti. 



w rhor.- of Bonis Lake. 



Dendritic sinter. — Aloug tlic shorcs of Borax Lake are numerous isolated 

 masses of calcareous sinter (Fig. 6). They all gi-ow from the surface of the 

 lake bottom, but some of them are partially submerged and some stood at 

 the time of examination many yards from the actual edge of the lake. They 

 consist chiefly of calcium carbonate, with small quantities of all the .'<ub- 



