. Bulletin of the Department of Agriculture. Agriculture; Agriculture. HEAT CAZSTKER OF FLAX. 11 The temperature records for the seasons of 1920 and 1921 (Table 8 and Figs. 3 and 4) were taken with a soil thermograph the bulb n J'O'A/E . _ . ^ ^ ^ - , ^ o(^rNCM cv vAj ,->( tq (\; c^^n,IN(^)Oi5 E. Fio. 3.—Diagram showing the daily maximum soil temperatures at a depth of half an inch, as re- corded by a soil thermograph with bulb barely covered, at Fargo, N. Dak., during June and July, 1920 (see Table 8). The black diamonds show times when severe canker occurred and the wMto diamonds tim

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. Bulletin of the Department of Agriculture. Agriculture; Agriculture. HEAT CAZSTKER OF FLAX. 11 The temperature records for the seasons of 1920 and 1921 (Table 8 and Figs. 3 and 4) were taken with a soil thermograph the bulb n J'O'A/E . _ . ^ ^ ^ - , ^ o(^rNCM cv vAj ,->( tq (\; c^^n,IN(^)Oi5 E. Fio. 3.—Diagram showing the daily maximum soil temperatures at a depth of half an inch, as re- corded by a soil thermograph with bulb barely covered, at Fargo, N. Dak., during June and July, 1920 (see Table 8). The black diamonds show times when severe canker occurred and the wMto diamonds times when canker was slight. JiJA/E juty .°>-'j^sit;^^i?!;^^^^Si?^'o;'^!^^;^^gxM'o»iov>s^»s^sig!t!Qigi^^^^i^sissi!;s^?;?SN§;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.

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