176 ILLINOIS STATE DAIRYMEN'S ASSOCIATION 



as the ultra-violet wave. And so you can take the dairy 

 cow or take your own children, for example, and build a 

 beautiful sun parlor of solid glass, give the child playthings 

 and allow that child to play in that room and the child will 

 have ricketts, because there is not one particle of the ultra- 

 violet ray that has ever been able to go through that glass 

 into that child's system to activate the development and 

 digestion and assimilation of minerals. So the building of 

 windows in your barn will not do the trick. It will be nec- 

 essary for you to get these cows out in the open ten or 

 fifteen or twenty or thirty minutes a day at least, three or 

 four times a week, and allow the unfiltered sunlight to 

 strike upon the backs and to activate the minerals in the 

 food which you have given her, and as a result you will 

 guard against and ward off many ills. You will increase 

 your production, your build, constitution, and especially is 

 this true in the handling of your breeding stock. How 

 many of you put the sire back in an old box-stall in the 

 northeast corner of a barn, and you keep him there month 

 after month, month after month, and then you wonder why 

 he is not profitable. It is simply because you have robbed 

 him of one of the elements necessary to vitalize him and 

 enable him to reproduce. So if you are breeding stock, if 

 you are growing stock, that producing stock must all in 

 some way be activated by the freest thing in the world — 

 sunlight, plus good common sense in feeding, which is one 

 of the important drive wheels in carrying forward this 

 wagon which is loaded with your ambitions to become 

 more successful in the dairying business. 



Now I beg your pardon for giving you such a rambling 

 talk on the subject of material. It is a pleasure for me to 

 be with you here this afternoon. I am an old friend of 

 the Dairy Association of Illinois, having worked with it 

 for years, and trust it may be my pleasure as years go on 

 to still continue working with you. 



I wish to thank you very cordially for the splendid 

 attention that you have given me. (Applause.) 



President O'Hair: Everybody likes to hear Professor 



