118 



sample. " It will be seen that there is no relation between the amount 

 of green forage and the amount of dry matter. Though the very imma- 

 ture Brazilian flour corn from its immense growth did produce the 

 greatest amount of dry matter, there were four varieties that produced 

 more protein and six varieties that produced more fat." The yield of 

 the various constituents is also given for a measured acre of Pride of 

 the North corn grown in a corn-field which liad been well manured. 

 The yield of green forage 30,108, pounds, dry matter 9,109 pounds, and 

 nutritive ingredients from this acre was in general about twice as great 

 as that calculated for the same area from the product of the same vari- 

 ety on a oue-tenth-acre plat from seed obtained from seedsmen. Some 

 of this difference may have been due to differences in soil and manuring, 

 but in the language of the writer: " It seems to us that most of the dif- 

 ference must be due to selection and acclimation of the seed [at the 

 station] during several years." 



The yields per acre of water and nutritive ingredients are illustrated 

 by two diagrams, one in black, representing the water ; and the other 

 in colors, representing tlie various other constituents. 



Best period for cutting (pp. 10-15). — "As the result of analyses made 

 at different periods of growth in 1888 we strongly urged (See Cornell 

 Station Bulletin No. 4, p. 52) that only such varieties of corn should be 

 grown for silage as would reach a good degree of maturity in the local- 

 ity grown. These conclusions have been abundantly confirmed, not 

 only by our own experiments, repeated in 1889, but by similar experi- 

 ments at several other stations." 



The variety used in 1889 was the same as in 1888, viz., Pride of the 

 North, from seed grown at the station during several years. The soil 

 was a clayey loam. The corn was planted about May 12 in hills 3:^ by 

 3| feet apart, and received ordinary cultiv^ation. The season was late 

 and very wet. The first cutting was made August 2 when the corn was 

 just coming into blossom ; the second August 17, when the kernels were 

 just beginning to fill with milk; the third and fourth, August 31 and 

 September 10, when the corn was in the " roasting-ear " condition ; and 

 the final cutting September 24, when the corn was perhaps a trifle 

 more mature than it was in 1888 on September 3. At each cutting 

 three average hills were selected and cut close to the ground. They 

 were then treated in the same manner as the samples of the differ- 

 ent varieties already described. A table shows the percentage com- 

 position at the various periods. It is noticeable " that the most marked 

 difference is in the great increase in dry substance between September 

 10 and September 24, and that there was more water on August 17 than 

 on August 2. This is entirely out of the usual experience, and may 

 perhaps be due to the individuality of the plants sampled. In regard 

 to the dry substance we find, as is usual, that the per cent of protein 

 gradually diminishes and that of the carbohydrates and fiber increases 

 as development approaches maturity. * * * At each period of cut- 



