58 VIGNETTES FltOM INVISIBLE LIFE. 



form, and a projection of others in different directions. 

 At first sight you would think the little organism 

 under your gaze had burst. But you are soon con- 

 vinced that this is not so, as a similar motion is 

 seen going inwards ; and by its expansion in one 



FIG. 9. Amceba. 



i 



direction and contraction in another the whole 

 mass, or animal, is moved forward. This is its 

 method of locomotion. These projections of its 

 substance are named pseudopodia, or false feet, 

 which, however, are more like gloved fingers than 

 feet. Yet, such as they are, they are extemporised 

 as often as required now in one direction and now 



