22, Report oF THE DIRECTOR OF THE 
solution of these problems. During a recent visit to the station 
and in speaking of this work he remarked: “ Well, Doctor, the 
truth is that we don’t as yet know anything about milk;” and 
yet while this surprising statement doubtless he would materially 
modify, the fact remains that it was not far from the whole truth. 
For results thus far secured I must refer you to the numerous 
bulletins which have been issued giving the results of our work. 
Concerning ensilage we have by careful feeding experiments 
found that milch cows digested 334 pounds of food constituents 
in a ton of fresh orchard grass, and 318 pounds of the same con- 
stituents in a ton of such ensilage aS we make at the station, so 
that it is entirely practicable to feed dairy cows during the entire 
fall, winter and spring upon what is nutritious as is fresh 
orchard grass. The cows of a winter dairy therefore may be 
kept upon a ration practically the same as that of summer when 
our meadows and pastures are at their best. 
Chemical Work. 
The chemical analyses are mainly connected with the following 
lines of work: 
First. The comparison of dairy breeds of cows with reference 
to production of milk, butter and cheese. (Tenth Annual Report, 
pp. 28-121, 299-887.) 
Second. Experiments relating to the manufacture of cheese. 
(Tenth Annual Report, pp. 221-295.) 
Third. Analyses of commercial fertilizers according to the 
provisions of the New York State fertilizer law. (Tenth Annual 
Report, pp. 404-456.) 
Fourth. Miscellaneous analyses, including a great ini of 
substances. 
In the year 1890-91 the number of separate chemical estima- 
tions actually performed reached nearly 15,000, and in the Mis 8 
1891-2, it is much larger. Bye 
Some of the more important results reached in connection with — 
the investigations are stated below. | 
Comparisons of dairy breeds of cattle with reference to produc- 
tion of milk, butter and cheese. i 
