114 ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



If they keep only two cows would loose more cows from milk fever than I 

 \would with forty or fifty cows. My cows fresh in the fall dry up on grass 

 ;and when through July and August on grass entirely and no grain food, 

 aand while you might not call them fat, they had fattened on grass and 

 fihere was not trouble at all at the time of parturition. 



The dairymen make a mistake in not getting the heifer calves from 

 $heir best cows. They make a great big mistake. The question of 

 heredity enters in here. You can raise these calves to be more profitable 

 -igows than it is possible for you to do if you use any breed. 



Many mistakes are made from a failure to ventilate the cow stables. 

 The) old idea is to have area enough so as to have sufficient air to supply 

 the animals. Now we are drifting away from that. The modern, up to 

 <s3ate stable has a system of ventilation, and an in-take of pure air and an 

 'jout-take of impure air going on constantly. This is economy of space, 

 economy of expense, and it is of great advantage to the' animals. The 

 details of this I cannot enter into. I have not the time. You can secure 

 Information on that point withoutany trouble. 



Now, the temperature of the stables: I will quote from an English 

 authority on this line: He says, "Cows will produce fifty cents each per 

 week more in stables that are kept at a temperature of 63 F. than when 

 at 52 F." I don't know of any work done in this country to demonstrate 

 this. This is a feature I wish some of our experiment stations would 

 take up with the intent to demonstrate that in ventilation there is no 

 treason why a temperature cannot be controlled artificially. In the future 

 1 think we shall see a great deal of that, for it could be utilized. I am 

 doing a little along that line myself. Mr. Alexander Potter, the English 

 authority, says, and I will repeat it: "Cows will produce fifty cents each 

 per week more in stables kept at a temperature of 63 F. than when at 52 

 IP.*' Thac is in his country. It might not be quite fair for us to take that 

 without any authority here. I don't know what use he was making of that 

 milk, but it is sufficient to set us to thinking and investigating. 



Many mistakes are made in our calf raising by feeding the calves 

 mew milk longer than necessary. I would rather have calves raised to 



