GLOSSARY 191 



Pangenesis, pangenetic (Gr. pas, pan, all; genesis, generation) (p. 54). 

 Panmixia (Gr. pas, pan, all; ntixis, mixture) (p. 100). 

 Parthenogenesis, parthenogenetic (Gr. parthenos, virgin ; genesis, 



generation), virgin -birth (p. 24). 



Particulate (L. particula, a small part), pertaining to small parts. 

 Pathological (Gr. pathos, suffering; logos, discourse), pertaining to 



disease. 

 Phthisical (Gr. phthiein, to waste away), pertaining to phthisis, the 



wasting disease (consumption). 

 Phyletic (Gr. phylon, race), pertaining to the race. 

 Pistil (L. pistillum, a pestle), female sex-organ of the flower. 

 Planarian (L. planarius, flat) , lowest class of worm-like animals. 

 Polarity (L. polus, pole), state of having two opposite poles with 



powers in opposite directions. 



Polype (Gr. polys, many ; pous, pod-, foot), an animal like the fresh- 

 water hydra. 



Potentially (L. potis, able), existing in possibility. 

 Predisposition (L. presdispositus, prepared), a susceptibility. 

 Preferential (L. pvce, before ; ferre, to bear), having a preference. 

 Preformation (L. pr&, before ; formare, to form), antecedent 



formation. 



Preponderant (L. pra, before; pondus, weight), outweighing. 

 Prepotent (L. pvce, before; potis, powerful), predominant. 

 Progeny (L. pro, before; genes, producing), that which is brought 



forth, descendants. 



Pronucleus (L. pro, before ; nucleus, kernel) (p. 43). 

 Protista (Gr. protistos, the very first), the lowest organisms (p. 6). 

 Protophyta (Gr. protos, first ; phyton, plant), the lowest one-celled 



plants (p. 6). 

 Protoplasm (Gr. protos, first ; plasma, form), the substance forming 



living matter. 



Protozoa (Gr. protos, first ; zoon, animal), the lowest one-celled 

 animals (p. 6). 



Quartile (L. quartus, fourth) (p. 152). 



Recessive (L. recessus, a going back), receding (p. 121). 

 Regeneration (L. re, again; generare, to generate), renewal (p. 7). 

 Regression (L. re, back ; gradi, to step), a going back (p. 161). 

 Reproduction (L. re, again; producers, to produce), the producing of 



new organisms (p. 10). 



Reversion (L. re, back; verier e, turn), a turning back (p. 81). 

 Rotifer (L. rota, wheel ; ferre, to bear), the wheel-animalcule, a 



minute aquatic animal. 



