334 
Such tables as these show that the weight of the mature ears at 
harvest will not differ much from the weight of the whole plant 
when dried at the stage of full tasseling, the variations from this rule 
being about 10 per cent above or below for these varieties. 
ILLINOIS. 
The closeness with which corn or maize or other cereals may be 
planted depends not only upon the quantity of moisture available in 
the soil, but also upon the ultimate proposed nature of the crop. 
Thus in experiments made by the [hnois Agricultural Experiment 
Station, when corn is planted for ensilage one plant to every 3 inches 
gave the best result. When planting for the grain the thinnest 
planted plats gave 5,664 and the thickest planted gave 18,932 ears per 
acre. As to the date of planting, May 4 to May 19 gave the best 
harvest. 
As to mode of planting, hills nor drills nor fertilizers gave any 
strongly marked differences. 
As to pruning the roots, the pruned and unpruned showed no spe- 
cial difference in regard to size, vigor, date, or yield of harvest. 
(Aorasci Vols hp: 162.) 
The development of corn from week to week during the growing 
season has been -studied by Thomas F. Hunt at the University of 
illinois Agricultural Experiment Station, at Champaign. He states 
that the same 18 varieties of corn have been grown at this institution 
during each of the years 1887, 1888, and 1889, the same varieties 
being always grown on the same plats and the seed obtained from the 
same source. The average yield of air-dried corn per acre for the 18 
varieties was 29.4 bushels in 1887, 83.2 bushels in 1888, and 66 bushels 
in 1889. Meteorological conditions appear to have been largely, if not 
solely, the causes of these differences in the yield. In 1889 measures 
were made weekly on three plants on each hill of Edmund’s Golden 
Dent, which is usually an early variety, but this year matured late, 
owing to the low temperature. The corn was planted four kernels to a 
hill on the 4th of May; it sprouted on the 20th of May, the soil hav- 
ing been very dry, and made slow growth to June 10, on account of 
the low temperature. The following table shows the weight of dried 
substance in a hill of three plants of uniform character : 
