APPENDIX. 257 



TABLE IV. 

 RESTING PERIODS IN THE GENETIC CYCLE. 



Mosses and Hepaticae ) In the middle of the Protomorphic 



protospores ] stage. 



Ferns and Equiseta ) Between the Orthomorphic and Ga- 

 gamospores ) momorphic. 



( Between the Protomorphic (embry- 



Phanerogamia ogeny) and the Orthomorphic (vege- 



seeds \ tation commencing with germina- 



f tion). 



Coniferse present also another resting period, in the middle of 

 the Gamomorphic stage (during the 

 maturation of the fruit). 



Animals in general, ( Between the Gamomorphic (maturation 



eggl Tor ova, ) f ^ e reproductive organs) and the 



Protomorphic (embryogeny). 

 ( Have also a resting period (pupa or en- 

 Insects, Trematoda, 1 cysted state) during their metamor- 

 &c. , S phosis, in the early part of the Ortho- 

 ( morphic stage. 



Mammalia have no obvious resting period, the mature ova re- 

 quiring immediate fecundation, which is at once followed by seg- 

 mentation and the development of the embryo. 



The bodies which, under the names of statoUasts, bulbs, resting 

 spores, <fcc., perform the part of eggs or seeds in some species "of 

 animals and plants, appear occasionally to be gemmae, which 

 may be termed accessory, as lying out of the direct genetic cycle. 



