346 



Journal of Agricultiiral Research 



Vol.X, No. 7 



As an average, there occur to the acre i ,764 pounds of calcium bicar- 

 bonate, 23,320 pounds of calcium sulphate, 2,350 pounds of magnesium 

 chlorid, 4,826 pounds of sodium chlorid, and 3,362 pounds of nitrate — 

 that is, an average of 1.90 per cent of these shales is soluble in water 

 and over 50 per cent of the salts consist of calcium sulphate or gypsum. 

 The concentration of this material by underground-water movement, 

 together with double decomposition, must result in enormous concentra- 

 tion of water-soluble salts. 



The results of the analysis of the soluble-salt content of the ash is 

 recorded in Table X. There is a marked increase in the sulphates and 

 chlorids as compared with the composition of the shale. The calcium, 

 magnesium, and carbonates decrease slightly. The increase is therefore 

 due to the presence of salts of sodium. 



Table X. — Soluble salts in the Tertiary ash 

 [Results expressed as pounds per 2,000,000 of material] 



Field No. 



41 

 42 



222 



298 



40 



217 



46 



218 



38 



Location of sample. 



Kings Meadow, Utah 



do 



Millbtun, Wyo 



Myton, Utah 



Sigurd, Utah 



Millbum, Wyo 



Utahn, Utah 



Richfield, Utah 



Millbum, Wyo 



Richfield, Utah 



Nephi, Utah 



do 



do 



do 



Chlorin 

 (CI). 



217, 640 

 136, 840 



Trace. 



4,572 



1,417 



57 



284 



227 



5,672 



26, 664 



993 

 14,320 

 None. 



As an average, there are 1,107 pounds of calcium bicarbonate, 15,017 

 pounds of calcium sulphate, 3,665 pounds of magnesium sulphate, 59,595 

 pounds of sodium sulphate, 11,315 pounds of sodium chlorid, and 4,715 

 pounds of sodium nitrate — that is, 4.77 per cent of the ashy material are 

 soluble in water. The predominating salt is sodium sulphate, over 30 

 per cent consisting of this material. The salt next present in greatest 

 quantity is calcium sulphate closely followed by sodium chlorid. As an 

 average, the amount of nitric nitrogen in the shale is 280 parts per mil- 

 lion, while the amount of chlorin is 4,603, the ratio being i to 16.9. The 

 ash which is the result of concentration of salts on the surface of the 

 shale contains 390 parts per million of nitric nitrogen and 6,597 parts 

 per million of chlorin, the ratio of which is likewise i to 16.9. 



The soluble salts present in the virgin alkali collected in the undis- 

 turbed condition in the hills consists largely of the chlorid and sulphate 

 of sodium, with appreciable quantities of calcium and magnesium sul- 



