The same cow during January, February and March, gave 



Morning's milk, 

 Xiiiht's milk. 



5.81 per cent., ) . A . . 



n on } Average, 6.0o per cent. 



6.30 per cent., J l 



Difference, 0.49 per cent, in favor of night's milk. 



Other cows give corresponding results, not so marked, perhaps, 

 but nevertheless, we may fairly conclude that either the exercise in- 

 volved in grazing over a comparatively large pasture, or the heat of 

 the day, or both together, tend to diminish the richness of the milk 

 secreted during the day, while the quiet or coolness of the night tends 

 towards a richer product In winter, however, our cows remain 

 quiet both day and night, not absolutely, of course, but still the ex- 

 ercise during the day is very little as compared with summer ; but 

 why the night's milk should so much exceed the morning's is unac- 

 countable unless it may be that the slightly shorter period between 

 milking might in part explain the fact. 



I have alluded to this variation because it is one of the larger va- 

 riations which may be brought about in milk, and, certainl}', so far 

 as the difference in fat contents of the milk, night and morning, is 

 concerned, it is not due to food, for the same food is concerned in 

 the production of the night's milk and the morning's milk, and the 

 difference of one-half of one per cent, must be due in summer, at 

 least, to other causes than food or time of milking, for the periods 

 between milking are equal at that season of the year. 



FREQUENCY OF MILKING. 



An experiment was conducted with two cows, for the purpose of 

 noting the effect of very frequent milking. A Shorthorn cow was 

 milked every hour, for tw r enty-four hours, and a sample of each milk- 

 ing- was analyzed. At the time of the commencement of the experi- 

 ment this cow was giving 14.25 pounds of milk daily, in which there 

 was 3.89 per cent, of fat, or .554 ponnds of actual fat daily. In 

 twenty-four hours, of hourly milking, she produced 16.25 pounds of 

 milk, in which was 5.27 per cent, of fat, or of total fat, .856 pounds, 

 an increase of fifty-four and one-half per cent in the total fat, in 

 twenty-four hours. 



The other cow, a Jersey, produced, previous to the experiment. 

 10.07 pounds, in which was 6.02 per cent of fat, or .606 ponnds. 

 The test was for seventv-two hours, and I will divide it into three 

 daily periods : 



