Farm Notes. 17 
an inch for the middle layer. As the three layers together 
were 88 inches thick, the expansion was but three per cent 
when a weight of 95 pounds per square foot was removed. 
The three.layers together were 88 inches thick and 
averaged 36 pounds per cubic foot with a pressure above 95 
pounds per square foot, or an average pressure for the whole 
of 226 pounds per square foot. It has been estimated that 
it requires a pressure of about 1500 pounds per square foot 
or about ten pounds to the square inch to compress ensilage 
to its least possible bulk, when it will weigh nearly 64 pounds 
to the cubic foot. This is on supposition that the fodder 
corn is properly matured. The greener the corn the more 
it will weigh to the cubic foot with small pressures and the 
less pressure it will take to force out the last of the air. 
B—SEED CORN FROM DIFFERENT ALTITUDES AND LATITUDES. 
A test was made extending over four years to see 
whether the altitude or latitude of the place at which the 
seed was grown would have any effect on the yield when 
planted in Colorado. Or, to put the problem in a little differ¬ 
ent words, to see whether Colorado grown seed was better 
or poorer than that grown further east. The two varieties, 
Pride of the North and Learning, were selected for the test 
since they are the largest corn that will ripen at Fort Col¬ 
lins, and the seed is handled by most of the large seed deal¬ 
ers. Fort Collins is out of the main corn belt so that none 
of the yields are so high per acre as are commonly obtained 
in the Mississippi Valley, nor nearly so large as would be 
grown in the Arkansas Valley in this State. But the prin¬ 
ciple of comparison is the same, even with the smaller 
yields. The following tables give the weight per acre of the 
whole crop or what it would yield if grown for ensilage and 
also the weight per acre of shelled corn. 
