cviii 



ROYAL HORTICULTURAL SOCIETY 



Orchid produced at the last Meeting proved, on close examination, 

 to be Curculionaceous. 



Mr. Berkeley read a letter from Mr. Blanchard in which he 

 stated that the top of the pot in which the Pelargonium with ad- 

 ventitious rootlets grew was free from moss, cocoa-fibre, or any 

 other substance. 



The Rev. Adam Fitch sent further specimens of diseased black- 

 currant shoots containing myriads of Acari, which are remarkable 

 for having the abdomen finely striate transversely, so that the 

 borders appear serrated, as well as for other particulars. 



Mr. Wilson Saunders sent a sketch of very similar galls on 

 hazel, which are produced by the larva of a Cecidomya. 



A letter from Mr. Peeney was read relative to the ravages of a 

 small cockroach in hothouses, and the difficulty of getting rid of the 

 pest. A species of cockroach is very destructive at Chiswick, 

 where there has been the same difficulty. Mr. "Wilson stated that 

 if a bowl is wrapped round with a wet cloth, they will get into the 

 bowl, from which they cannot escape. It appears, however, that 

 they soon become accustomed to any kind of trap (and the same 

 may be said of poisonous food), and are therefore on their guard. 

 It is believed that the species in question was first imported with 

 Orchids. 



Mr. Berkeley exhibited a curious form of Capsella Bursa-Pas- 

 toris with fern-like leaves, which he had found in two situations at 

 Sibbertoft. Some doubt was expressed as to its being really a 

 form of that plant ; but it is now in flower, so that the uncertainty 

 is removed. 



Mr. Home exhibited specimens of an JEcidiwn which is in- 

 jurious to a species of Amaryllis in India. It is apparently a form 

 of 2E. Allii ursini. 



A letter from the Hon. Gr. J. Groschen was read relative to a 

 disease in Tobacco-plants in New Grenada, accompanied by notes 

 as to locality and culture, which will appear in the Society's 

 Journal. The specimens were examined, and were quite free from 

 any parasitic fungus, and it was the opinion of the Committee 

 that the sudden death of the plants was attributable to great heat 

 subsequent to an accidental deficiency of water. 



Mr. Home exhibited a curious excrescence on a shoot of Acacia 

 LeUbeh cut from a hedge-row in Manipura, North-west Province 

 of India. 



Mr. Berkeley produced sections of Plum, Peach, and Nectarine 



