Protamoeba Protomyxa. 



57 



own account, engulfing food particles, exhibiting amoeboid 

 motion, and dividing just as in the case of the parent. 



A simpler state of things than this could scarcely be 

 imagined. Here we have morphological differentiation at 



FIG. 7. Protogenes porrecta. (Max Schultze.) 



tepii^s^ 



ItlSiS -"- K = =TO ,,-:~ 



/ i\ A\\ 



/ I .K\ \\ "^ 



I iU\ \ ' 



its lowest ; whilst it is to be noted that all the various 

 functions exhibited by higher forms are manifested by this 

 exceedingly simple organism. 



SECTION II. PROTISTA PROTOMYXA. 



Closely allied to Protamceba we find another simple 

 organism, with an even more instructive life- history. 



Crawling over the shells of some dead molluscs in the 

 Canary Isles, Hgeckel found an organism, the study of whose 

 structure and life-history has thrown a flood of light on the 

 relationships of forms such as we are discussing to each 



