195 



Upper Columbia Lake, North End. — About seven and a half miles 

 north of the north end of Upper Columbia Lake is located a thermal 

 spring, the water of which afforded (Geol. Surv. Rep. II, 1886, p. 15 T) 

 the following result : 



Potassium trace Sulphuiic Acid .... very large quantity 



Soda rather small quantity Carbonic acid " " " 



Lithia trace Silica trace 



Baryta " Chlorine fairly large quantity 



Strontia very small quantiy Organic matter . . .small quantity 



Lime " large " In 1000 parts of water, dried 



Magnesium large quantity at 180 "C 2'i77 



Ferrous oxide trace Specific gravity at I5'5° C looi "48 



Dr. G. M. Dawson, who collected the specimen, states that the 

 discharge is not less than 20 gallons per minute, and that the tempera- 

 ture at the hottest point was ii2^F. 



Vermtllion Pass. — Dr. G. M. Dawson reports several chalybeate 

 springs which flow out through the gravel on the river flats about 6 

 miles west of the summit and near the place alluded to in his report as 

 " the bend." He states that the springs are copious and of such 

 a character as to suggest their use medicinally. — Vide Geol. Surv. Rep. 

 I, 1885, p. 120 B. 



Many thermal and other springs are, of course, known locally in 

 British Columbia, but no data are available. Of some, how- 

 ever, although no analyses are at hand, the following notes by Dr. G. 

 M. Dawson in his " Report on the .Vlineral Wealth of British Columbia 

 Geol. Surv. Rep. Ill, 1887-88, 162 R. may not prove uninteresting. 



'■ Admiralty Island. — Salt spring. According to analysis quoted 

 by Pemberton in the place above cited ( Nanaimo). The spring con- 

 tains 65 parts of saline matter to 1,000, but with more impurities than 

 the last ( Nanaimo )." 



'•'■ Near Lilooet River. — about five miles from head of Harrison 

 Lake. Hot springs known as St. Agnes's Well ; no particulars." 



" Sinclair Pass — Rocky Mountains, Hot Springs, on south side of 

 Berland's Brook, near the point at which it issues from the mountains 

 into the Upper Columbia valley. Three springs reported, and said to 

 be copious. Mr. John McKay, who discovered these springs, states 

 the temperature ot one as 118° F." 



^'- Elk River Valley. — Rocky Mountains, about lat. 50*^7 ; warm 

 sulphur spring reported on east side of river, by Mr. H. M. Hatfield." 



