the original weight of sample shows the amount of water that 

 was originally'in the substance under consideration, for at the 

 temperature above mentioned only the water is driven off. 



Taking our third column in the table and it is seen that 

 at any time there is a very large per cent, of water in the corn. 

 Take for illustration the sample of ensilage (Southern) corn 

 July 26. Here was 91^% of water. From Table F we see 

 that an average stalk weighed 15 ounces; 91^4^ per cent, of 

 fifteen is 13.68, the amount of water which such a stalk contain- 

 ed, leaving only i}i ounces of dry substance. Take the same 

 variety of corn Sept. 16 and there was still 75.4% of water, and 

 as an average stalk weighed almost three pounds, it follows 

 that each stalk contained 2 lbs, 3)^ ounces, or more than a 

 quart of pure water, leaving but three-fourths of a pound of 

 actual nutritive matter. This point is dwelt upon for the pur- 

 pose of showing that pounds or tons per acre are not necessa- 

 rily a reliable standard of value, and also to ^show that not ev- 

 erything stored in the barn or in the silo is food, but rather 

 that in these cases but a small portion is actual nutrient ma- 

 terial. A study of Table A shows that in each variety of corn 

 there was a substantial increase in the per cent, of dry matter, 

 as is shown by Table B, in which the number of pounds of dry 

 substance in a ton of the corn is given for each variety at each 

 time of sampling. 



It will be seen from this that the value of the corn per fon 

 increased in a marked degree from August 19th to Sept. i6th, 

 but this is deceptive as a part of this is due to a decrease of 

 weight per acre by loss of water in maturing. So far as it ex- 

 tended this loss was precisely like the drying of hay, making 

 the increased value /<?r /<7« very marked, but from Table F it 

 will be seen that the actual increase per a{:re is much less. 



