148 T. 31. Chaiard — Analyses of Alkali Lake Waters. 





Contents in 



J5C.C. 



In 1 Liter. 



Per cent. 



Hypothetical 



Per cent 





A. 



B. 



Average. 







Composition. 





Si0 2 



•0063 



•0053 



•00580 



•232 



•59 



Si0 2 



•232 



•59 



K 



■0133 



•0136 



■01345 



•538 



1-37 



KC1 



1-027 



2-62 



Na 



•3674 



•3671 



•36725 



14-690 



37.51 



XaCl 



21-380 



54-58 



S0 3 



•0148 



•0146 



•01470 



•588 



1-50 



Xa 2 S0 4 



1-050 



2-68 







•0030 



•0029 



•00295 



•lis 



•30 



Na 2 C0 3 



10 611 



27-09 



co 2 



•1755 



•1757 



•17560 



7-024 



17-93 



XaHC0 3 



4-872 



12-44 







•0615 



0616 



•06155 



2-462 



6-28 





39-172 



100-00 



CI 

 H 



•3365 



•3366 



•33655 



13-462 

 •058 



34-67 

 •15 











39-172 



100-00 





Proceeding southwardly, we have next the " Big Soda Lake" 

 near Ragtown, Churchill Co., Xevada. This, with the adjoin- 

 ing " Little Soda Lake, 5 ' has been very fully described by 

 King* and by Russell, f and my own observations, during my 

 short stay at this place, were confined to the technical aspects 

 of the manufacture of carbonate of soda, which is carried on 

 at both lakes. 



The sample of the water of the u Big Lake," of which the 

 analysis is here given, was collected by Mr. Russell in 1881, 

 and was taken at the depth of one foot. The analysis was 

 made in 1884 and was published in Bulletin ~No. 9, TJ. S. Geol. 

 Survey, the C0 2 being then determined by difference. Since 

 then it has been carefully determined in duplicate, with the 

 following results. 



Specific Gravity, 1-0995 at 19-8°. 



Hypothet. Composition. Per cent. 





In 1 Liter. 



Per cent 



SiO, 



■304 



•24 



Mg 



■270 



•21 



K 



2-520 



1-95 



Na 



45-840 



35-53 



B 4 7 



■314 



•24 



so 4 



12-960 



10-05 



co 3 



20-934 



16-23 



CI 



45-690 



35-41 



H 



•181 



•14 



Si0 2 



•304 



•24 



MgC0 3 



•862 



•67 



KOI 



4-817 



3-73 



NaCl 



71-507 



55-42 



Na 2 S0 4 



19-170 



14-86 



Na 4 B 4 7 



•402 



•31 



Ka 2 C0 3 



16 731 



12-97 



XaHC0 3 



15-220 



11-80 





129-13 



100-00 



129-013 100-00 



Mono Lake, Mono Co., California, is next in succession. 

 This locality is described at length by Mr. I. C. Russell in his 

 paper, " The Quaternary History of Mono Yalley, California," 

 which will shortly appear in the 8th Annual Report of the 

 U. S. Geological Survey ; for the present it suffices to say 

 that this large body of water, of a composition so favorable to 

 utilization, is, for practical purposes, inaccessible, and that the 

 high altitude and consequent shortness of the evaporating sea- 



* King, Clarence, U. S. Geol. Expl. 40th Parallel, vol. i, pp. 510-513. 

 f Russell, I. C, Geological History of Lake Lahontan, U. S. Geological Survey. 

 Monographs XI. 



