Ill 



In the case of ammonia, the difference is considerably 

 greater. The table on page 18 indicates still greater diffe- 

 rences than those which ought to occur when we had 

 not used so great intervals in the variations of the amount 

 of blood. Taking the following figures into conside- 

 ration the value 30, observed in the case of 1 cc. NH 3 , 

 acting upon 1% blood dilution, ought to correspond 

 very nearly to complete haemolysis, according to the 

 law of proportionality between the degree of colour 

 and amount of blood, in the case of complete haemo- 

 lysis. 



The difference between the maximum 40 and the 

 maximum value for total haemolysis in this series, 30, 

 is about 30%. There is, on the other hand, a much 

 greater difference between the maximum value for 0,5 

 cc. NH 3 , 27, and the maximum value for total haemo- 

 lysis in the same series, which exceeds 10 and mighl 

 perhaps reach 12. The maximum is also much flatter 

 in the series with NH 3 than in those with NaOH as is 

 clearly shown in fig. 2 (a & b) which in a graphic man- 

 ner reproduces the ciphers from the table on page 18. All 

 these phenomena may be considered as consequences of 

 the fact, that ammonia is a weaker base than sodium hy- 

 drate and its combinations therefore are subjected to 

 a higher degree of hydrolysis. It depends on this with- 

 out doubt, that ammonia which, in the case of smaller 

 blood concentrations, effects less haemolysis than sodium 

 hydrate does, (supposing that the haemolysis is incom- 

 plete), in the case of higher blood concentrations can 

 have a stronger hnemolytic action than the more power- 

 ful base. This seems to signify that also the first com- 

 bination of base with the blood corpuscles suffers from 

 a perceptible, though very small, hydrolysis. 



It appears also from the above tables, that the regu- 



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