"Reactor" Milk in Tuberculo Medicine. 35 



For over two years we have been making these analyses as 

 opportunity presented. Certain technical deficiencies are met 

 with which make the accuracy of these results only comparative. 

 The chief among these is due to the fact that as soon as tissues 

 such as liver are minced a separation of fluid (blood and lymph) 

 occurs. This is not the case with muscle but is to some degree 

 true with all organs. 



We have not utilized materials unless the autopsy occurred 

 soon after death. The following brief table abstracted from a 

 considerable number of analyses is fairly representative. 



The results given in the table for cases where no conspicuous 

 renal disease was present are the highest we have noted rather 

 than the average figures. For example, case 1 1 , cerebral throm. 

 bosis and arterio-sclerosis, there might here have been a difference 

 of opinion as to whether there was renal disease or not, as evidenced 

 in the sections. With pneumonia the analyses gave usually higher 

 results than in any other disease not associated with frank 

 nephritis. 



With cases of nephritis with nitrogen retention there is a 

 notable accumulation of extract nitrogen in both muscle and liver 

 tissue, which, for muscle amounts to over 50 per cent increase 

 above the highest normal. With liver the increase is an average 

 and not invariably to be demonstrated. Nephritis with oedema 

 gives inconstant results although the effort was made to select 

 cases where nitrogen retention could be excluded. This, how- 

 ever, appears difficult since pure chlorid retention in our experi- 

 ence is exceedingly uncommon; there being usually a slight tend- 

 ency to retain nitrogen which is disclosed only in long continued 

 metabolism experiments. 



22 (1086) 



The utilization of " reactor " milk in tuberculo-medicine. 



By C. B. Fitzpatrick. 



[From the Bureau of Laboratories, Department of Health, New York 



City.] 



We cannot in the study of tuberculosis get away from the discon- 

 certing observation that it is the infected individual who is immune 



