158 



MAINK STATE COLLEGE 



1892. 



7 p. M. 



Mean. 



April, 



37.29 



51.93 



45.10 



44.77 



May, 



47.00 



58.95 



54.19 



53.38 



June, 



58.74 



70.65 



67.29 



65.56 



July, 



65.58 



78.54 



71.92 



72.11 



August, 



61.16 



74.15 



67.46 



67.50 



September, 



53.33 



68.19 



56.52 



59.68 



October, 



40.98 



51.65 



45.13 



45.94 



Mean, 



52.05 



64.87 



57.38 



58.43 



Tables Showing Changes of Temperatuke in the Soil for 



Increased Depths. 



1889. 



Depth of 

 Thermometer. 



Mean tempera- 

 ture for 6 mos., 

 May to Oct. 

 inclusive. 



Difference in 

 mean tem- 

 peratures. 



Changes in tem- 

 perature for 

 one inch. 



1 inch . . . 

 3 inches. 

 6 inches. 

 9 inches. 

 12 inches 

 24 inches 

 36 inches 



60.50 

 60.77 

 59.63 



58.78 

 58.26 

 56.40 

 54.79 



+0.27 



+0.13 



— 114 



—0 38 



—0.85 



-0.28 



—0.52 



—0 17 



—1.86 



—0.15 



—1.61 



—0.13 



1890. 



Depth of 

 Thermometer. 



Mean tempera- 

 ture for 7 mos., 

 April to Oct. 

 inclusive. 



Difference in 

 mean tem- 

 peratures. 



Changes in tem- 

 perature f(jr 

 one inch. 



1 inch . . . 

 3 inches. 

 6 inches. 

 9 inches. 

 12 incnes 

 24 inches 

 36 inches 



54.63 

 54.92 

 53.96 

 53.26 

 53.31 

 51.96 

 50.77 



+0.29 

 —0.96 

 —0.70 

 -^0.05 

 —1.35 

 —1.19 



-i-0.14 

 —0.32 

 —0.23 

 +0.02 

 — 11 

 —0.10 



