6S JOURNAL OF THE 



eovery. The possibilities ahead of us in this direction will be 

 thoroughly tested by our State Board of Agriculture. It must be 

 enough to say now that some of the poore t of this rock has already 

 been shown, by the writer,^ to produce very good superphosphate^ 

 and that, as soon as the question of a sufficient supply is settled,, 

 large phosphate mining and manipulating works will be established 

 in this section. 



EXPERIMENTS AS TO THE AMOUNT OF BUT- 

 TER FROM WEIGHED AMOUNTS OF MILK. 



JAMES P. KERR 



Some discussion having arisen as to how much buiter could be 

 gotten from a pound of milk, a series of experiments was under- 

 taken to see if an answer could be given to the question. In these 

 experiments the milk of several cows was mixed ; the cows were 

 pyartly thorough bred Devons and partly Devon and Jersey. Ire 

 every ease the milk of the same cows w^as taken. Two experiments 

 were carried out early in the spring, the feed of the cows being care- 

 fully measured for several days prior t ) each experiment. In the 

 first ease 23.12 pounds milk or 10.86 quart.s produced one pound of 

 butter. In the second, 17.59 pounds or 8.28 quarts produced one 

 pound of butter. These experiments were not made on consecutive 

 days. 



In the second series of experiments, the milk was taken for three 

 consecutive days (April 28th, 29th, 30th). 



Experiment 1.— Amount of milk taken was 40.5 pounds. This 

 milk was kept at a temperature of 60^ F. for two days, when it was 

 churnedv It was put in to the chum at 60° F. and churned for nearly 

 an hour, then it was gradually heated to 66° F. and churned forty 

 minutes longer. The yield of butter was 1\^^ pound. 



Experiment 2. — Amount of milk 42f pounds. Management of 

 milk the same as in Experiment 1, except the milk was put into the 

 churn at 66° F. instead of 60° F. Time of churning 45 minutes. 

 Amount of butter produced 2 pounds. 



