350 



Journal of Agricultural Resea/rch 



Vol. X. No. 7 



and only the results for total salts are therefore available. These re- 

 sults are recorded in Table XIV. The amount of material is very small 

 and as an average is 0.24 per cent. 



Table XIV. — Soluble salts in Quaternary material from Cache Valley, Utah 

 [Results expressed as pounds per 2,000,000 of materialj 



Average 4,904 pounds, or 0.24 per cent of total salts. 



Considerable concentration must take place over large areas to cause 

 the production of alkali soils such as occur elsewhere. It is not surprising 

 that there is not more alkali in the Cache Valley. 



SOLUBLE SALTS IN THE GYPSUM DEPOSITS 



The State of Utah contains enormous deposits of gypsum. These 

 deposits are not peculiar to any single geological area or locality. They 

 are widely distributed throughout the State. Fourteen samples of this 

 gypsum were collected and analyzed. The results are recorded in Table 

 XV. As would be expected, the soluble material consists largely of the 

 sulphates of calcium. As an average, 2.72 per cent are soluble in water, 

 consisting almost entirely of calcium sulphate, 96 per cent of the total 

 soluble being gypsum. As an average, there are 892 pounds of calcium 

 bicarbonate, 52,500 pounds of calcium sulphate, and 1,152 pounds of 

 magnesium chlorid. 



Table XV — Soluble salts in the gypsum deposits 

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



