276 



cause. It would seem, therefore, that a sterile inflammation does 

 not atTect the secretion of milk in the same way as a bacterial in- 

 flammation has in our earlier researches repeatedly proved to do; 

 this result could be expected. 



The effect of the sterile inflammation of the udder with silver- 

 nitrate solution was quite different. The verj^ next da}- (9 March) 

 the composition of the milk had changed very much, as was also 

 the case on the following days, when the milk presented also a 

 very abnormal aspect. 



Gradually composition and aspect improved ; however, this quarter 

 became choked before the milk was quite normal; at all events not 

 a trace of milk could be drawn on March 19 and following days. 

 The examination of the milk-samples gave the results tabulated on the 

 following page. For the sake of comparison we have also tabulated the 

 figures of some abnormal milk-samples luith (N". 164 and 142) and 

 loitliout (N°. 181 and 267) streptococci, which samples were examined 

 in 1921. For the same reason we included the figures obtained from 

 the same quarter (R. F.) of the injected cow before this treatment 

 (N». 343 and 337) and from other quarters (N". 385 and 381) after 

 the injection. 



The table shows that the milk from the quarter injected with 

 silver-nitrate possessed, — with the exception of the presence of 

 streptococci, — all the properties of milk from animals, suffering 

 in a high degree from, udder-affections e.g. streptococci mastitis). 

 Acidity, p , sediment after centrifugation in Trommsdorff-tubes, 

 leucocytes, chlorin-, and lactose-content, were all changed in the 

 same measure,^) as were also the total protein-content and the 

 calcium-content. 



Furthermore the content of total, combined-, and free carbonic 

 acid appeared to have increased, just as in milk from cows with 

 diseased udder. This anomaly and its connection with the hydrogen- 

 ions concentration of milk has been pointed out in 1919 by L. L. 

 VAN Slijke and J. C. Baker'). 



Lastly, the tryptophane-content appeared to be considerably in- 

 creased. In 1921 we found this content in abnormal milk (derived 

 from diseased udders), and in colostrum to be very high. This is no 

 doubt due to the occurrence in these kinds of milk of much protein, 

 which is identic with, or related to the globulins of bloodserum, 

 just as the other anomalies of the milk from cows with diseased 



^) Milk containing streptococcci has sometimes a liigh degree of acidity. 

 2) Journ. Biol. Ghem. 40. 335 (1919). 



