378 



Journal of Agricultural Research 



Vol. XII, No. 6 



CgOPjVOlVC 



(bA&IS OF \T/. nOISTURJL) 



IOWKSI2WK5l6WKe> 24-WK.5 5ZWK5 4-OWKS 



JULI0JULa4AUG.21 OCTZi DE_C IS FELb. 17 



5IWK5 time: FROn 



MA^^Y I PLANTING. 



(e>At>(5 OF \iy- ri015TUR£.^ 



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 OCT 23 DELCia TELB 17 



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Fio. 7. — Graphs of the depressions of the freezing point in soils ii and 12, with and without crop. 



OF IT/. MOISTURE.^ 



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JUL.ITJUL5\^UG^6 OCT 30 DE.C. iS FEL&O 



51WK.5 TIME. FR.Or-1 

 MAY 7 PLANTING. 



Pig. S. — Graphs of the depressions of the freezing point in soil 14, with and without crop. 



