UOW TUE ANIMAL LIVE3 2Uy 



357. This cell eiiii tlow out so as to surround 

 microsfopic particles ami diaw thfiii into its«>ir ; 

 these it cau digest and us«» to incn>ase its own 

 substance. By reversing this ]»rocess, it <'an 

 throw out indigestil)!*' an<l wast*' niat«'rials. It 

 can al>sorb, digest and build into its own suIj- 

 stanee nutritive matters already dissolvrtl in 

 wat»>r; and it can drive out waste, worn out and 

 injurious matters which it holds in solution in its 

 own liijuid. 



'.]7}>^. When the cell grows too large, it can 

 divide into two iiidependent j)arts, eacli havimr 

 all the vital powers which belonged to the jtarent 

 cell or globule. 



3.VJ. Thus the single-celled animal can mak.- 

 of any pai't of its body limbs t'<>r moving, hand^ 

 for grasping, fingers for feeling, stomach for 

 digesting, channels for the cinuilatiou of its 

 nutritive liquids, as well as organs for excretion 

 and for the increase of its kind. 



Ic. M<lt\[i -rrUul iitiitmils 



.300. In all the higher animals there is not one 

 cell, but myriads ; and these cells are no less 

 essential to life and to the healthy performance 

 of all vital functions than is the single cell of 

 the lowliest organism. In the <'(»mpl»»x animal 

 body, however, the cells build up solid tissues 



