METABOLIC GRADIENTS IN AMOEBA 



65 



Figures 5, 6, and 7 are drawings of the disintegration of amoeba 

 in I molecular KNC. In 5a the amoeba is flowing in the direc- 

 tion indicated by the external arrow. After exposure to the 

 cyanide, the animal contracts slightly and sends out a pseudopo- 

 dium from the posterior end at x (fig. 56). In 5c the newly 

 formed pseudopodium has ruptured, and in 5d disintegration has 

 begun at the tip of the old pseudopodium and is proceeding 



6 <■■ d 



Fig. 5 Disintegration of amoeba in \ molecular KNC, a, amoeba flowing in 

 direction of external arrow; b, after application of the cyanide, a pseudopodium 

 flows out at the posterior end at x; c, this new pseudopodium ruptures; d, disinte- 

 gration from the distal end of the pseudopodium present in a inwards. 



Fig. 6 Same as figure 5. a, amoeba flowing in direction of arrow with 

 pseudopodium 1; the amoeba has abandoned pseudopodium 1, and is advancing 

 with pseudopodium 2; on exposure to \ molecular KNC, a pseudopodium forms 

 at the posterior end at x; c, pseudopodium at x- has ruptured; d, disintegration 

 from tips of pseudopodia present in a, pseudopodium, 2, the most recently active 

 one, preceding. 



fc=5>< 



Fig. 7 Disintegration in \ molecular KNC. a, amoeba flowing with pseudo- 

 podium 1; b, exposure to cj^anide; amoeba now advancing with pseudopodium 2, 

 sends out a pseudopodium at x, from the side of the body; c, pseudopodium at x 

 ruptures, disintegration beginning from tip of pseudopodium 1. Although 

 pseudopodium 2 was more recent, pseudopodium 1 was much more vigorous. 



