42 AMERICAN DAIRYING. 



warrant for us to be thinking about the cause 

 of this disease developing in some herds and not 

 in others. I believe poor ventilation is the 

 greatest promoter of this disease. I fear some 

 of us have paid more attention to securing 

 warm stables than we have to securing good 

 air or ventilation. This is a question w r e shall 

 receive information on from our experiment 

 stations in the near future, as at least three of 

 them have found their herds of cows afflicted 

 with this disease. At first I felt it was too bad 

 to have our experiment station herds afflicted 

 in this way, but since giving the subject more 

 thought I have come to the conclusion that it 

 is better to have the station herds afflicted than 

 any other herds, as it will give an opportunity 

 for us to learn more about it through investiga- 

 tion than we otherwise would. The probabilities 

 are that there is no more of this disease in our 

 country than there has previously been. We 

 are discovering more of it, as we have more 

 reliable means of detecting the disease. This 

 is a question that I do not feel competent to 

 write much about, but at the same time there 

 is room for good horse sense to be used. I re- 

 cently had an interesting conversation with a 

 veterinary professor in one of our agricultural 

 colleges (a man who had had several years' 

 practice before becoming a teacher), in which 

 he said he was fond of milk and expected to 



