Dato of cutting. 



335 



Average 

 weight. 



June 10 



June 17 



June 25 



Julyl 



Julys 



July 15 



July 22 



July 30 



Augusts 



August 12 



August 19 



August 26 



September 2. . 

 September 10. 

 September 16. 



Orams. 

 0.51 



1,034. 

 1,176. 



Tassels showing; not in bloom; no silk. 

 All in tassel; in bloom; in silk. 



Silks dead or partly so. 



Soft milk stage. 



Milk stage or passed. 



Mostly glazed. 



Varies from milk stage to ripe. 



All ripe except 1 ear. 



Professor Hunt finds that the varieties of corn that mature about 

 September 25 give the Largest 3'ields ; date of planting has little influ- 

 ence on the j'ield. Depth of planting and drilling versus hill planting 

 did not affect the yield in 1888 or 1889. The quantity of seed planted 

 was more important than the allotment of the kernels to the hills; 

 preventing the growth of weeds was more important than stirring 

 the soil; pruning of roots injured the crops; shallow-working cul- 

 tivators gave better results than deep-working; commercial ferti- 

 lizers did not materially increase the yield, but stable manures did 

 so. (Agr. Sci., Vol. IV, p. 184.) 



MAIZE AND PEAS. 



Xir\V YORK. 



Sturtevant (ISS-t) gives the results of two years' observations 

 (1883 and 1884) at the experiment station, Geneva, N. Y., on the 

 thermal constants* of many varieties of maize and peas. He observed 

 both the temperature of the soil and the air, and takes for his com- 

 putations always the first plant which sprouted, bloomed, or ripened. 

 Observations of 128 varieties of maize, four hills to each variety, 

 gave an extreme variation of 19 days between the blooming of the 

 first and last hill, the average interval being 4.92 days. As Sachs 

 adoj^ts 49.1° F. as the lowest temperature at which maize will ger- 

 minate, and Koppen gives 49.2° F., therefore Sturtevant adopts 

 50° F., and considers that any observed temperature, less 50° F., 

 leaves a remainder that is nearly proportional to the growth of maize 

 at that temperature. A similar lower limit of 44° F. is adopted for 

 the groAvth of the pea. He notes that in 1885, by trial at this exper- 

 iment station, the '' Chester Countv Mammoth Corn " germinated 



