XXxii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



SCIENTIFIC COMMITTEE. 



January 12, 1909. 



Mr. E. A. Bowles, M.A., F.L.S., in the Chair, and twelve members 



present. 



Bichardia diseased. — A large spathe of B. ethiopica was exhibited 

 having about half the outer part brown and dead. Similar brown spots 

 had appeared upon the leaves. No fungus was present, and the Committee 

 thought that, in all probability, the trouble was due to overfeeding. 



Malformed Orchid .— From Mr. Lynch, V.M.H., of Cambridge Botanic 

 Garden, came a malformed flower of Cypripedinm Dominianum, with 

 a normal flower for comparison. The flower had the sepals fused and 

 a double lip. 



Diseased Carnations.— Specimens of diseased Carnations were received 

 from Natal, where a very large number of plants had suffered at all stages. 

 These were referred to Mr. Saunders and other members of the Committee 

 for further investigation. 



Nomenclature of multigeneric Orchid hybrids. — The Chairman 

 announced that the sub-committee appointed to consider this question 

 had arrived at the decision that the best solution of the question lay in 

 coining names for each of the combinations of genera made, consisting 

 of a commemorative name and the termination "ara." The full text of 

 their finding will be laid before the Committee at an early date. 



Parasitic Rose canker. — Mr. Chittenden, F.L.S., showed specimens of 

 the Eose canker described in the Journal E.H.S., Vol. xxxiv., p. 222. 

 The Eoses attacked had been imported from Germany three years ago. 



Scientific Committee, January 26, 1909. 

 Mr. E. A. Bowles, M.A., F.L.S., in the Chair, and eight members present. 



Diseased Carnations. — Mr. Saunders, F.L.S., and Mr. Douglas, V.M.H., 

 reported that the diseased Carnations shown at the last meeting, had in 

 all probability died through attacks of stem eelworm. The soil used for 

 potting was too light, and the plants were too old to yield the best results. 

 Plants of two years of age were sometimes liable to sudden collapse, and 

 those of a greater age even more liable to fail in this manner. 



Grease bands. — Mr. W. Voss reported that no moths had been caught 

 upon grease bands on fruit trees at Enfield since November. 



Algae, dkc, on sewage sludge. — Dr. Voelcker remarked that mosses, 

 hepatics, and algae had developed upon certain samples of sewage sludge 

 which had been kept at Woburn, but not upon others, which were kept 

 under precisely the same conditions. The samples which contained the 

 greatest amount of lime bore the largest amount and greatest diversity of 

 growth, and it was thought that possibly the difference was as much due 

 to the physical condition of the sludge as to its chemical constitution. 



