Ill 



It is to be noticed, that the addition of salts increases 

 the sedimentation of the blood corpuscles: this appa- 

 rently lessens the ha?molytic action. For this reason, 

 also on this point, several control experiments have 

 been made through determination of the velocity of 

 reaction; these have on the most important points con- 

 firmed the results which have been obtained in the 

 usual way (see below). 



To begin with, we will investigate the action of salts 

 upon bases. In these experiments the blood must be 

 free from salts: it was therefore emulsionated in a so- 

 sution of cane sugar. It was obvious from the first ex- 

 periments, that blood is huemolysed much more strongly 

 by bases in sugar solution than in salt solution. And 

 certainly salts decrease the action of bases, as will be 

 seen from the following experiment. The solutions of 

 bases, which were added, were all Vso n m respect to 



base, but contained various amounts of salt. The first 

 column in each series indicates as usual the amount 

 of solution, added to 10 cc. blood dilution. The second 

 column indicates the degree of haemolysis. 



The headings indicate: Na.O, that pure l / aci normal 



i-iO 



37 - 



