264 REPORT OF THE CONFERENCE ON GENETICS, 
assume with a fair amount of certainty that it was by hybridity, and by 
fixing, in very long process of time, certain characters suitable to certain 
conditions of the plants’ habitats. 
THe “LATENT GERM.” 
This will be no new subject to students of Darwin,* who will imme- 
diately see a clue herein that may be a closely related quality to reversion, 
Fic. 83.—Opontiopa VuyLsTEKE®. (Orchid Review.) 
Bloom 1904. Plant 1906. 
but it may be a new idea to some hybridists who are not acquainted with 
its principles. To point my meaning, I cannot do better than relate the 
world-known results of the attempt to produce a hybrid between a nearly 
thoroughbred Arabian chestnut mare and a Quagga stallion. The hybrid 
was successfully obtained and the parents never re-mated, but two sub- 
sequent foals bred by that mare to black Arabians bore more or less 
the stripes and other marks of the Quagga, which were so evident that 
* Variation of Animals and Plants, vol. i. ch. xi. p. 518. (Murray, 1905.) 
