46 



duced cost per bushel of the increase can be made for an ordinary year. 



There was nothing in the early inspections made to indicate any 

 loss or injury of plants by these applications, and this notwithstanding 

 the fact that the weather of the spring was on the whole decidedly 

 rainy. The checks were planted May 11, and the experimental plots 

 on the 12th. From a complete meteorological record kept from April 

 16 to July 2, by Mr. W. P. Flint, who had principal charge of these 

 experiments in the field, it appears that the rainfall of the last fifteen 

 days of April was an inch, and that of May, 4 5/16 inches. Two and 

 five-sixteenth inches of this May rain fell during the days of the 

 month preceding the planting of the corn — 1 Vj inches on the first, 1/16 

 of an inch on the second, 5/8 of an inch on the seventh, and 1/8 on 

 the tenth. The first rains to follow the plantings of May 11 and 12, 

 were 1/8 of an inch on the fifteenth and 3/16 of an inch on the six- 

 teenth. 



The complete record of rainfall, in inches, for the period referred 

 to is as follows : 



April 16, snow, not measured. May 16, 3/16 inch. 



17, 9-16 inch. 19, 1/4 inch. 



22, 1-16 inch. 21, 1/16 inch. 



23, unmeasured snow. 22, 1/4 inch. 



24, unmeasured snow. 23, trace. 

 26, 1/4 inch. 25, trace. 



30. 1/8 inch. 28, 1 1/8 inch. 



May 1, 11/2 inch. June 4, 1/8 inch. 



2, 1/16 inch. 8, 1/4 inch. 



7, 5/8 inch. 18, 1/8 inch. 



10. 1/8 inch. 27, 3/4 inch. 



15, 1/8 inch. 

 The temperature of ten days before the planting period averaged 

 78.6 degrees F. as a maximum, 41.3 degrees as a minimum, and 59.95 

 degrees as the mean. Those for ten days after the planting of the 

 plots were: maximum, 83.6; minimum, 48.2; and mean, 65.9. The 

 maximum reading of the first period was 92 degrees, and the minimum 

 was 29. For the second period the maximum was 97 degrees, and the 

 minimum, 29. With a rainfall of 1.7 inches for the first of these ten- 

 day periods and a mean temperature, in the sun, of 60 degrees; and a 

 rainfall of .94 of an inch for the second period and a mean sunshine 

 temperature of 66 degrees, the weather of this planting-time may 

 properly be described as cool and wet. The following is a complete 

 record of temperatures from April 16 to July 2, as registered by a 



