28 A NATURALIST IN THE PACIFIC chap. 



A. Analysis by Dr. C. T. Jackson of Boston, U.S., of the water 



obtained in 1 840 by the Wilkes Exploring Expedition} 



Specific Gravity I '0097. Temperature 57° F. 



The evaporation of a quantity equal to 1000 grains of distilled water gave 

 7*2 grains of salt, thus composed : — 



Chlorine 3'577 



Sodium 1-665 or Soda 2-238. 



Magnesia 0-440 



Lime 0-366 



Silica and iron with a trace of phosphate 



of lime 0-200 



Carbonic acid 0-493 



6-741 

 Organic matter and loss 0-459 



7*2oo 



B, Analysis by Dr. Oscar Pieper of Hamburg of the water 



obtained by Mr. Kleinschmidt in May, i Z'jG? 



The report stated that the water was clear, neutral in reaction 

 and salt-bitter in taste, brown flakes of hydrated iron oxide occur- 

 ring in it after long standing. The dissolved salts amounted to 

 " 8-48 g. per litre," and the remark is made that " the concentration 

 is therefore not so great as in sea-water." The solid constituents 

 consisted in by far the greatest part of Natrium and Calcium 

 chlorides. A quantitative determination, which on account of the 

 small quantity of the water was confined to " eine Chlor und Kalk- 

 bestimmung," gave this result : — 



Chlor (Chlorine) 4-79 g. per litre. 



Kalk (Lime) 2-31 „ „ 



Reckoned as Chlornatrium (Kocksalz) and Chlorcalcium, these 

 results were obtained : — 



Chlorcalcium (Calcium chloride) 4-55 g. per litre. 



Chlornatrium (Sodium chloride) 3-09 „ „ 



Amongst other constituents found in small quantities were 

 Sulphuric acid, Silicic acid (Kieselsaure), Potash, and Iron oxide. 

 Iodine, Bromine, Nitrates, and Borates were completely wanting. 

 "If this water," says Dr. Pieper, "has healing properties, it does not 

 owe them to its chemical composition." 



^ Narrative of the United States Exploring Expedition, III., 199, by 

 Commodore Wilkes. See also Dana's Geology of the same expedition. 

 2 foumal des Museum Gode^roy, heft 14, Hamburg, 1879. 



