82 AGRICULTURAL EXPERIMENT STATION. [Jan. 



5. Fertilizing Constituents of Cream. 



[Average analysis.] 



Per Cent. 



Moisture at 100° C, 75.22 



Nitrogen (16i cents per pound), .54 



Potassium oxide (41 cents iJer i30und) , 123 



Phosphoric acid (6 cents per pound) , . • .168 



6. Some Conclusions drawn from the Preceding Records. 



1. The relative proportion of digestible nitrogenous and 

 non-nitrogenous constituents consumed differs on the whole 

 in a larger degree during the year 1887 than in 1888. Dur- 

 ing one-half of the year 1887 it ranged above 1:8.5; during 

 the year 1888 it reached 1 : 7.3 in only one case, and for six 

 of the remaining months it was below 1 : 6 (nutritive ratio). 

 In 1889 it was in one case only 1 : 6.59, while in all others 

 it resembled quite closely those of the preceding year. The 

 different nutritive ratios averaged, for the year 1887, 1 : 7.08 ; 

 for the year 1888, 1 : 6.00 ; for the year 1889, 1 : 5.80. 



2. The amount of fat in the milk varied, during the year 

 1887, from 3.45 to 4.50 per cent., with an average of 4.00 

 per cent. ; during the year 1888 it varied from 3.14 to 4.86 

 per cent., with an average of 3.97 per cent. ; while during 

 the year 1889 it varied from 3.90 to 4.72 per cent., with an 

 average of 4.37 per cent. 



3. The quantity of milk, in quarts, required to produce 

 one space of cream, during the year 1887, varied from 2.42 

 to 1.63, and amounted, on the average, to 1.93 quarts for the 

 entire year; during the year 1888 it varied from 1.93 to 

 1.43, averaging for the year 1.72 quarts; and during the 

 year 18<S9 it varied from 1.76 to 1.53 quarts, with an average 

 of 1.66 quarts. 



4. The value received for one space of cream during the 

 year 1887 varied from 3.00 to 3.88 cents, with an average 

 of 3.58 cents ; during the year 1888 from 3.25 to 4.00 cents 

 were received for each space, with an average of 3.72 cents ; 

 which would equal 12.17 cents per quart of cream for 1887 

 and 12.65 cents for 1888. During the year 1889 the money 

 value allowed by the creamery for one space of cream varied 

 from 3.00 to 4.00 cents, with an average of 3.43 cents, or 

 11.66 cents per quart. 



