HYBRIDISATION, SEEDS, & SEEDLINGS 21 



(if such a term is allowable) the plants are all secondary hybrids ; 

 in the first, they have resulted from the intercrossing of a Brasso- 

 cattleya with a Lcclia, or a Brasso-lselia with a Cattleya, or a 

 Brassavola with a Lslio-cattleya ; in the second instance, the 

 members have been obtained by crossing a Cattleya with a Sophro- 

 Icclia, or a Sophronitis with a Lselio-cattleya. 



Before closing this chapter an interesting fact is worthy of 

 notice, although it has been incidentally referred to previously. 

 It is that many Orchids formerly described as species, but considered 

 to be natural hybrids by careful observers, have had their parentage 

 proved beyond all doubt in recent years, because similar plants have 

 been raised from the supposed parents. Mr Seden and Mr de 

 Barri Crawshay have solved a number of these interesting problems. 

 A word of advice to those who propose to enter upon the fascinat- 

 ing business or hobby of raising hybrid Orchids is that they 

 should arm themselves with " The Orchid Stud Book," a monu- 

 mental work by Messrs R. A. Rolfe and C. C. Hurst. It contains 

 the pedigree of practically every hybrid Orchid raised, and so shows 

 what has been already done, and by deduction also shows what 

 species have not yet been exploited by the hybridist. 



