10 



ANIMALS, MINERALS, AND PLANTS 



is like every other animal in one respect ; each begins 

 as one cell and, when mature, is made up of either one cell 

 ,-..•:;:;;,,•, ,..„_, (Fig. 2), or a combination of many 



',i-[]::':-y{':i:'''''-ii:'.l ("C'lls, together with the substances 



;::;:■ ;:';-:;':;:':'n^^- -- -« lying between, which connect the 

 t^;^:;-/^;;::::-;.-;: ': cells and hold them together. Foi- 



example, one of the simplest ani- 

 mals, the ama'ba, is composed of 

 but one cell, during its whole life. 

 On the other hand, tlie whale is 

 made up of millions of cells, to- 

 gether with the substances which He 

 between the cells and hold them in 

 place. The one cell of the amceba 

 ~~ It performs all the functions of hfe, 

 i.e. assimilation, repi'oduction, res- 

 piration, growth, etc. ; while in the 

 body of the wliale, these functions 

 are distributed among groups of 



tissue; o, cilia; n, nucleus. Special functlon to perform. 



