S32 



The Xlmty of ihe Orgamsm 



tista," ^ tlie implication being that the protozoa are not 

 "true animals." "Organless organisms" is an appellation 

 one not infrequently finds applied to protozoa. 



{a) Comparison of Certain CiUates and Metazoans 



By way of introduction to the commentary I wish to make 

 on this mode of thinking, I ask the reader to compare the 

 pictures, figures 1 and 2, keeping the idea of cell as much 



cnt.cav.^ 



bi^m 



ms 



FIGURE 2. HYDRA (aFTER PARKER AXD PARKER). 



ect., ectoderm. end., endoderm. ent.cav., enteric cavity. mth., 

 mouth. hyp., hypostome. msgl., mesogloea. ntc, nematocysts. 

 psd., pseiidopods. fl., flagella. bd., buds, spy., spermary. ovy., 

 ovary, ov., ovum. 



