253 ILLINOIS DAIRYMEN'S ASSOCIATION 



the milk. As I shake the bottle you will notice that the white 

 substance soon disappears. It has dissolved the casein, and 

 turned it into a new compound. I would like to pass that 

 bottle around and let you note how hot it has become. A 

 chemical change has taken place. The sulphuric acid dissolves 

 the white substance in the milk, thereby liberating the fat. The 

 fat now is more or less liberated in there. But in order to get 

 it to come to the top, we put it into the machine and whirl these 

 bottles at the rate of about a thousand revolutions :. minute. 



While that test is being turned, I want you to note the 

 difference in the conformation of those two animals, simply by 

 looking at them, and observing the difference. It is better than 

 any word picture I could possibly paint. Note the heavy thighs 

 of the Red Poll cow ; the heavy hind quarters. They claim that 

 she is capable of producing considerable beef, and so she is. 

 Compare her quarters with the Jersey. The dairy cow does not 

 need a heavy hind quarter, because she does not put any of that 

 into milk; it just means that much more to support. But if 

 you are going to raise beef, it is necessary to have a cow with 

 heavy quarters. If you can notice, and I think you can, the 

 difference in their backs, you will see the red cow has a wider 

 back; much wider than the Jersey. You notice that her middle 

 piece is covered with more flesh ; that the Jersey is more spare, 

 and more angular in every way. She has a deeper body. Look 

 at that paunch 0:1 the little cow, as compared with the digestive 

 organs of this Red Poll cow, which is supposed to perform two 

 duties; making milk and making beef. But you can see, in the 

 very nature of things, that that animal is handicapped in making 

 the same amount of butter that the Jersey is, because she does" 

 have two functions to perform. It is pretty hard to talk against 

 a machine like that (the tester), and if you have any questions 

 to ask, I would be very pleased to answer them. 



A Delegate : — How about the Guernsey cow ? 



Mr. Glover: — The Guernsey cow is very much like the 

 Jersey. She is a little larger cow. She comes from the island of 



