4GG 



Soil tempera turcs, in degrees F., June to September, 1S80. 



At Borface. 



Below snrface. 



1 inch. 



3 inches. 



Highest 



Lowest 



Daily menn 



Mean 'l.iily range. .. 

 GreateMt daily range 



91 (July 10) 91 (Julv 10) 



44 (S«-i»t. 21) 44 (Sept. '.'I) 



66. 19 66. 77 



9. 97 10. 84 



26 (Aug. 30) 21. 50 (July 7) 



84.90 

 49 



66.51 

 7.52 

 15.50 



(July 10) 

 (.Sept- 21) 



(July 17) 



Below Bnrface. 



6 inches. 



12 inches. 



24 inches. 



Highest . 



Lowe.st 



Daily mean 



Mean daily range 



Greatest daily range . 



78.80 (Jnly 10) 



51 (Sept 21) 

 6«.35 



3. 4« 



8.50 (Aug. 20) 



74 (July 10) 68.50 



I 



54 (Sept> 28) 55 



65.80 ' 64.22 



1.03 I 0.33 



7.50 (Aug. 14) 1 2 



(Jnlv 30, 



Aug." 2, 3) 



(Jalt. 7) 



(July 19) 



I'rinripal periods of crop dtrelopment. 



"Wlioat: 



H.'a<l.Ml M;iy L't. 

 Kipfii.d .Inly 12. 

 Harvi-.stnl .Inly 12-2G. 



Hay : 



Clover in blossom May 21-31. 

 Harvest ernlod j!ily 12. 



Oats: 



Sown April 12-19. 



Ripeninp .Inly 12. 



Harvost«Ml .Inly li>-26. 

 Corn : 



Plant«'.l May 10. 



Ctit SejiteniWer 27-Ortoltor 4. 



Tin- winter was not very fa voralilc to jn"-iiii. having been qniteojien, thotiglj tlii."* was 

 partially rilVstt by the searrity oflianl frosts, so that the wheat and grass was littli- 

 winterlxilhil. The sjirinj: was warmer than nsnal, bnt very wet; still, i)lantin>; 

 was .soin«'what e.irlier than in IHMM. and germination was good. The jjrogress of 

 vegetation was serionsly arrested by a h.ard frost May 2i>. and by the tremendous 

 raijifallsof May SO to .lune 1, amounting to 5.04 inehes. After tliis, fre<jnent rains 

 made harvesting quite ditlienlt; the wlnde season waseohl; the rainfall w:us sonie- 

 wliat above the average, though quite well distributed. Corn <Mitting was some- 

 what ri'tarded. an<l al.so the potato harvest. Potatoes rotted badly, and eorn stover 

 was only of a modi-rate quality. 



KeLATIOX of MKTKOKOLOtJlCAL CONDITIOXS Ti» THE DEVELOP- 

 TSIENT OF COWN, W. IMm, \K. I'll. I)., AND W. H. ('ALDWELL, R. S. (p]>. 



223-L'LM)). — This i.s a rimtinuatidii of tho reconl of observations rejMirted 

 in tlu' Annual K«'i)oil of tlio station for is,ss (aov 10\|M'iinn»nt Station 

 Uullt'tin No. -. i^art ii. p. l.?(»). Seed from < 'li;im]»ioii Tear! Wliitc and 

 IMa.sa (,)uet>n varieties was ]»lantO(l .May t>. 



The method of measurrimnt was as follows: .**ix jdauts were seleeted and the 

 inerease in hi'ight noted at intervals of several days. For this purjic»se the tij) of 

 each new i>airof le.ives was used as the i)oint of dej>artnre for the days immediately 

 sueeeeding its a)t])earanee. From the ligures obtaineil an average was struck. 

 whi<h was assumed to represent the actual growth forth<> interval, and by dividing 

 by the number of days intervening the daily rate of growth w.as obtained. It was 

 lioped that in this manner errors in nieasurenn'ut. arising from the ai»pearance of 

 new nodes of growth, would h.- distributed over the ilitfirent jdauts an<l thus 

 eliminated. This imfliod c:mi not take into aieount the variatioji in the r.ite of 

 growth due to tliuialie cliaiiges as distiuguisliid from those due to the developineut 



