Ill 



haemolysing toxin 1 ). The less resistent blood corpuscles 

 will be dissolved a very short time after the toxin is ad 

 ed and before they have subsided. 



In order to examine the action of varying amounts 

 of blood and toxin, a good many other experiments were 

 made of which some are tabulated below. In the first 

 series 0,8, 0,6 and 0,4 cc. of 1/40 n NaOH or 1,0 , 0,7 and 

 0,5 cc. of 1/40 n NH 3 were added to 10 cc. blood dilu- 

 tion with a percentage, varying from 0,05% to 10%. 

 The experiments with 0,3, 0,2, 0,15, 0,1 and 0,05 percent 

 all gave total haemolysis, corresponding to the degrees 

 of colour 10, 7, 5, 3,5 and 1,7. They are therefore not 

 included in the following table, which comprises the 

 other experiments. It should be noticed that the degrees 

 of colour are very nearly in proportion to the amounts 

 of blood in the cases of total haemolysis which is, as 

 it ought to be. 



Action of various amounts of blood on the same amount of 

 NaOH and NH,. 



l) Th. Madsen: 1. c. p. 21819. 



18 



