446 JOURNAL OF THE ROYAL HORTTCULTURAL SOCIETY. 



edges associated with them. In certain forms yellow spots do occur 

 on a white ground, without any admixture of purple or brown. This, 

 however, is natural enough. But since brown spots on a white ground 

 may occur without any separate yellow marks, the fact must be taken 

 to mean that the distribution of the purple and of the yellow in such 

 cases coincides, with the result that the spots are brown though the 

 ground is w^iite. Since, however, the factors responsible for the 

 purple and for the yellow respectively must surely be genetically 

 independent, this coincidence is remarkable. There are often of 

 course purple spots in addition to brown ones, but no separate 

 yellow spots, or even yellow edges, to- the brown spots in these cases. 



The Chairman said that if the members of the Conference would 

 send a number of examples of Odontoglossums to Professor Bateson, 

 perhaps he would be so good as to contribute a paper on their colour 

 arrangements at a future Conference. 



Sir George Holford did not think the Conference should break up 

 without one point being well rammed home, and that was that Orchids 

 could not be grown to perfection unless the houses were suitably built 

 and properly placed — matters which were sometimes overlooked. Some- 

 times gardeners were blamed for not being able to produce the proper 

 thing, but he would urge strongly that those who were building more 

 glass should carefully consider where they were going to put up that 

 glass. In his own case, when he put up a new block of houses he was 

 persuaded by Mr. Alexander to choose an open field where there was 

 plenty of fresh air and no trees near. He strongly urged those present 

 to be very careful when erecting new glass to erect it in a suitable 

 position. In conclusion, Sir George Holford proposed a vote of 

 thanks to Mr. Gurney Fowler for presiding that day. 



Mr. de Barri Craw shay seconded the motion, which was carried 

 with acclamation. 



Mr. Gurney Fowler, in acknowledging the vote of thanks, brought 

 the Conference to a conclusion, and said he had found it most in- 

 teresting, as no doubt others present had. He quite agreed with Mr. 

 Thwaites, whom they desired to thank, as to the need for the utmost 

 care in breeding Orchids; and in naming them, to give a plant the 

 varietal name of " alba " unless it was a pure albino was greatly to 

 be deprecated. 



