256 



APPENDIX. 



TABLE III. 



PERIODS OF INTERPOLATION OF GEMMATION 

 IN THE GENETIC CYCLE 



IN SEVERAL TRIBES OF PLANTS AND ANIMALS. 



Gemmation is exceptional in any stage among the higher Ar- 

 ticulata and Mollusca, and is unknown, as a normal arrangement, 

 among Yei-tebrata. 



