LECTURES ON IMMUNITY 



the concentration to the power f and time of reaction 

 gives a nearly constant value, as indicated by the figures 

 below, found by Madsen and Walbum, as well as by Fuld : l 



The reaction is therefore not proceeding in proportion to 

 the concentration of the fibrinogen, but to the power f of it. 

 Closer investigations seem desirable. 



Even the process of precipitation is subject to the same 

 influence of temperature as the other reactions studied. 2 

 The precipitating substances were 10 n. sulphuric acid or 

 albumen precipitin, produced by subcutaneous injection 

 of egg-albumen into a rabbit. The following values were 

 observed with a solution of 2 c.c. of egg-albumen in 98 c.c. 

 of physiological salt-solution. 



10 N. H 2 SO 4 (90 MIN.) 



PRECIPITIN (73 MIN.) 



n 1 1,000. n = 6,300. 



1 Fuld: Hofmeistcrs Beitr'dge, 2. 514 (1902). 



2 Madsen and Walbum : Oversigt over det kgl. danske Vid-sdsks Fork. (1904), 



