250 REPORT OF THE CONFERENCE ON GENETICS. 
opposing influence of reversion in these “ hybrids’ will, unless we con- 
tinually introduce new blood by the aid of fine varieties of so-called true 
Species, cause some of us to be severely disappointed. 
I think the above analyses fairly prove my earlier statement, that the 
raisers of Odontoglossa have produced many equal to and in advance of 
the natural hybrids. 
Hysrips More ViGoROUS THAN SPECIES. 
Now observe some peculiar and good results of hybridity. Generally 
speaking, the hybrids are far stronger in constitution and easier to grow 
than the imported species, and in some cases their growth is equal to that 
in 2 
HAR DCR on 
Fic. 62.—Opontoaiossum Lawrencranum. (Gardeners’ Chronicle.) 
Sepals and petals coppery-brown, with purplish overlaid markings; lip yellow, 
with yviolet-purple basal spotting. 
of both parents : crispo-Harryanum as an example ; a finer constitution 
can hardly be desired. 
In colour, we have obtained a most beautiful violet in O. Smithi, by 
the action of the rose in Rossii rwbescens upon the lilacine suffusion of 
crispo-Harryanum derived primarily from Harryanum. Consider the 
next step in advance with Smithii and Cochlioda Noezliana, which, though 
