254. VENOMOUS SNAKES AND THE PHENOMENA OF THEIR VENOMS 
Table 30 and figures 5 and 6 show one of Myers’s experiments with the 
same venom used in the first series, but kept at 35° C. for 12 hours. 

TABLE 30. 
M. h. d. still 5 Combining M. h. d. 
present. Difference. equivalents. per equivalent. 
Exposed venomalone..... ...... BGO hil cls Camcctercuencteresekal| (eiekevesiarstenetonerses| | toca eteney at renee 
Exposed venom+o.1 c.c. serum .. 166.6 ; 10 8.3 
Exposed venom +0.2 a 100 2 Io 6.6 
Exposed venom +0.4 ee 40 A 20 3.0 


While inclining very markedly to the toxoid theory of Ehrlich, Myers has, 
nevertheless, pointed out the possible reversibility of the reaction between 
toxin and antitoxin. 
Somewhat later the relation between the toxic and hemolytic powers and 
the corresponding antitoxins of cobra venom was investigated by Flexner 
160, 




100 250 
290 
(so 
100 
20 50 
&3r ee 
oO 10 20 30 40 
Fic. 6. 
200 TABLE 31. 
190 
180 
170 M. h. d. neutral- 
M.h.d ized by corre 
160 still present. | sponding frac- 
tion of antivenin, 
150 
140 
130 
120 Venom aloneisth sci). senses 200)) (5) as eae nak 
110 0.002 gmM.+0.025 C.c. Serum .. 133 66.6 
100 +0.05 as 60 73 
+0.075 “i a7 23 
90 +0.1 ns 24 13 
80 +0.1 25 es 16 8 
_ +0.15 50 10 6 
+0.175 3 5 5 
60 +0.2 ee 3 2 
50 +0.225 1.4 1.6 
+0.25 I I 
40 
30 
20 
10 
1 j nae 
O 01025 005 G075 0.8 O25 O15) (O75 O12 O:225 
Fic. 7, 
