348 



Journal of Agricultural Research 



Vol. X, No. 7 



Table XII. — Soluble salts in clay and soil in place of Tertiary origin 

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



Field No. 



12. . 

 4... 

 231. 



14. . 

 216. 



233- 

 19.. 

 20. . 

 228. 

 17.. 



7... 

 6... 



207 . 



$■■■ 

 54- • 



Average . . 



Location of samples. 



Nephi, Utah 



....do 



Lyman, Wyo 



Nephi, Utah 



Millbum, Wyo 



Lyman, Wyo 



Fountain Green, Utah 



Richfield, Utah 



Lyman, Wyo 



Nephi, Utah 



do 



do 



do 



Millbum, Wyo 



Nephi. Utah 



Grass Valley, Utah . . . 



Tertiary 



Calcium 



(Ca). 



7>540 



II, 028 



10, 272 



24, 700 



401 



2,724 



600 



11,388 



3.047 



842 



I, 604 



802 



3,088 



5,856 



5.614 



10, 708 



6,263 



Magne- 

 sium (Mg). 



None. 

 None. 



1.757 

 None. 



367 



926 



None. 



825 



I, 607 



None. 



None. 



None. 



1,153 



1,573 



None. 



930 



571 



Carbonic 

 acidCCOs). 



Sulpliuric 

 acidCSOO. 



300 

 280 



I, 400 

 480 



I, 600 



I, 000 

 600 

 280 

 960 

 620 

 720 



I, 160 

 400 

 720 

 400 

 260 



699 



35, 440 



23,872 



135,240 



61, 760 



9, 296 



25, 760 



3,654 



33,392 



no, 400 



971 



I, 201 



2.057 



608 



19,918 



1,448 



29, 880 



30, 880 



Chlorin 

 (CI). 



1,172 oco 

 925, 900 



13, 048 



567 

 Trace. 



425 



None. 



1,205 



142 



1,630 



10, 998 



17,725 



22,476 



992 



104, 280 



None. 



141, 961 



The results for the analysis of the sandstone, shale, alkali, and ash 

 of the Jurassic are all recorded in Table XIII. One very significant fact 

 is the low results for water-soluble salts in the sandstone and shale. 

 Another is the fact that only the carbonates, chlorids, sulphates, and 

 nitrates of calcium and magnesium are present. Salts of sodium are 

 absent or present only in very small quantities. 



Thus, in the sandstone there are, as an average, 874 pounds of calcium 

 bicarbonate; 5,634 pounds of calcium sulphate, 1,156 pounds of calcium 

 chlorid, 2,600 pounds of magnesium chlorid, and 1,980 pounds of sodium 

 nitrate per 2,000,000 pounds of material. There is 0.607 per cent of 

 soluble material, nearly 50 per cent of which is calcium sulphate. 



Likewise, in the shales the salts consist largely of the carbonates, 

 sulphates, and chlorids of calcium and magnesium. There is 500 pounds 

 of calcium bicarbonate, 3,182 pounds of calcium sulphate, 2,430 pounds 

 of magnesium sulphate, 855 pounds of magnesium chlorid, and 98 

 pounds of sodium nitrate. There is 0.30 per cent of soluble salts in the 

 shales, over 50 per cent of these salts being calcium sulphate. 



The alkali material is not widely prevalent in the cultivated soil 

 derived from the Jurassic either in the native virgin or cultivated soils 

 The alkali here reported consists of the leaching from beneath the sand- 

 stone. Occasionally the underpart of the sandstone decays very rapidly, 

 and white incrustations are deposited immediately beneath the rotten 

 sandstone. One sample, No. 259, of this material was collected. Another 

 sample, No. 288, consisting of crystalline material, was also collected. The 

 alkali accumulations, or niter spots, prevalent in the soils derived from 

 other geologic formations, were not observed by us in the Jurassic- 

 Three samples of the ashy material were collected from beneath the 



