422 JO'JRNAL OF THE ROYAL HOETICULTURAL SOCIETY. 



Table IV. — (Classic Stud Orchids) — continued. 



Nmiibei-s of Progeny 

 won F.O.C. at R.H.S. 

 Nov. 1907-Nov. 1912. 



0. X ' Hera ' rohustuin 1 



X ' J. Howes ' 1 



C. X Leeanum giganteum 1 



C. X Leeanum ' Prospero ' 1 



C. X ' Milo,' Westonbirt var 1 



C. X ' Minos,' Young var 1 



C. ' Niobe,' Westonbirt var 1 



C. X nitens magnificum 1 



C. X nitens, Sander's var. . . . . . . 1 



C. Sallieri Hyeanum 1 



G. X Thompsonii -. 1 



G. X ' Troilus ' 1 



Dendrobium nobile nobilius . . . . . .1 



Laelia anceps Schroederiana 1 



Laeliocattleya X ' Hippolyta Phoebe ' .... 1 

 Miltonia Bleueana Peetersii ...... 1 



M. vexillaria ' Queen Alexandra ' 1 



Odontoglossum x Adrianae ' F. K. Sander ' . . .1 



O. X amabile heatonense 1 



0. X afnabile ' Royal George ' 1 , 



0. crispum ' Britannia ' . . . . . ■ . .1 



0. crispum ' F. K. Sander ' 1 



0. crispum Graireanum 1 



0. Pescatorei Gharlesworthii 1 



0. X Vuylstekeae 1 



0. X Wilckeanum albens 1 



May I venture to suggest that special groups made up of these stud 

 Orchids and their progeny would provide an exhibit at the E.H.S. 

 Shows that would not only be interesting to Orchid growers generally, 

 but would be particularly useful to Orchid breeders as a demonstration 

 of the germinal constitution of these stud Orchids ? Competitive classes 

 might even be arranged for these progeny tests to decide which 

 individual Orchids are best for stud purposes. . 



The result would be to create a special demand for high-priced stud 

 Orchids that hardly exists to-day. In view of the increasing number 

 of Orchid-growers all over the world, it is hardly likely that such a 

 demand would be confined to the British Isles, and there is no reason 

 why this country should not in the future provide the world with stud 

 Orchids, as it does to-day with thoroughbred horses and pedigree 

 animals generally. 



So far we have dealt with the general application of the principles 

 of Genetics to Orchid breeding. It may be useful now to put the matter 

 into a somewhat more concrete form by suggesting briefly a few special 

 possibilities of the practical application of Genetics to Orchid breeding. 



The Breeding of Albinos. 



The beauty and value of albino Orchids is generally recognized, and 

 the Orchid breeder naturally wishes to raise new and improved forms 

 by hydridization. In other words, he wishes to vary the shape and 

 size of the flower while retaining the chaste beauty of the albino. So 

 far as we know, all albino Orchids breed true to albinism when 

 selfed, but no remarkable improvement in shape, size, and distinctness 

 can be obtained in this way. On the other hand, as We have already 



