420 



V. THE NATURE OF EVOLUTION 



100 



90 



80 



30 



10 



1 



6. 



► time ihours) 



Fig. 26 Decrease in progress in the action of rennet due to anti-rennet serum. 

 Antiserum : anti-rennet rabbit serum. 



Rennet solution (0.01%), 1 cc+antiserum 0.9% NaCl solution, 

 Icc+milk (1% CaClj) Ice 

 Dilution of antiserum: 1= 1:160, 11 = 1:80, 111 = 1:40, IV = 1:20, 



:1:10 

 100 r^ 



04 





^:XX 



— •■time (minutes) 

 Fig. 37 Derease in progress in the action of rennet due to tannic acid. 

 Tannic acid : Kahlbaum, used about a month after its dissolving. 

 Rennet solution (0.01%), 1 cc + tannin 0.9% NaCl solution, 1 cc + milk 

 (1% CaClo), Ice. 



Concentration of tannic acid: I: 0.003125%, II: 0.00625%. Ill: 

 0.0125%, IV: 0.025%. 



