cxlii 



ROVAL HORTICULTURAL SOCIETY. 



one or more years. The Chairman noticed a little mycelium-like 

 down in the centre of some of the spots, to which lie thought at- 

 tention should he directed. 



A quantity of young Pears greatly altered in form were sent hy 

 Mr. Webb, of Redhill, the condition being produced hy the larva 

 of a Dipterous insect, information on which was promised hy the 

 Chairman at a future meeting. 



Dr. Thomson confirmed to a certain extent the observations on 

 the deflection of the leaves of the Papaw at night, sent by Mr. 

 Hanbury to the last Meeting ; but the change of direction was 

 confined to the young leaves. 



A diseased specimen of the common white Lily was sent by 

 Mr. Earley, the stem being split at the bottom, probably from 

 overgrowth, and all the lower leaves dead and marked with white 

 desiccated patches which had preceded their decay. 



Specimens of paper spotted with Conferva dendritica, Agardh, 

 were submitted to Dr. Gilbert as probably arising from man- 

 ganese used in the manufacture. Their similarity to the markings 

 in moss-agates, and to some form of manganese, was remarked 

 by Mr. Horne and Dr. Masters. 



Dr. Masters read a communication from Mr. Yan Houtte on 

 the effect of variegated Abutilon on the self-coloured stock. 

 When the graft was removed, the stock recovered its original con- 

 dition. Further information, however, was promised on this 

 point. 



Dr. Masters handed in a tabular statement of the progress of 

 the experiments on the effect of different manures now carried on 

 at Chiswick. 



The Chairman then made some observations on wild Pears and 

 Apples, on which he promised a paper for the Journal after he 

 had had an opportunity of making drawings of sections of the 

 fruit. 



He then exhibited a Cucumber in which the petiole of the leaf 

 was confluent with the fruit for more than two-thirds of its length. 

 Dr. Masters remarked that the petiole did not always form a ridge 

 on the fruit, but the leaf proceeded from the apex. In cases like 

 that produced there w T ere frequently three cells below the leaf and 

 two only above. In this case, however, the fruit was quite solid. 



Mr. Saunders produced flowering specimens of Paulownia, re- 

 marking that he believed the reason why it did not flower depended 

 in general more on the wood not being well ripened than on early 



