CXxii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



which proved to be a species of Thelymitra, probably T. carnea, with 

 pinkish flowers, rarely seen in gardens. 



Polygonum sacchaliense variegated. — Sir Everard im Thurn sent 

 from Scotland leaves of Polygomim sacchaliense showing broad yellow 

 lines on each side of the mid-rib, and other yellow marks. The plant 

 had been cultivated for several years in the garden, but had not 

 previously shown any signs of variegation. 



Mulberry. — Mr. Luxmoore of Eton wrote regarding a mulberry in 

 his garden which showed a tendency towards dioecism. The staminate 

 flowers were all upon one part of the tree, with but few pistillate ones 

 among them; the pistillate flowers were mostly upon the other branches, 

 and the separation of the two forms of flower was almost complete 

 upon the different parts of the tree. The Eev. W. Wilks said that a 

 tree in his garden always produced the two forms on separate branches, 

 and the leaf-colouring was quite distinct and had been so for many i 

 years. Mr. Hales, A.L.S., said the same was true of two trees in the 

 Chelsea Physic Garden, and was constant. It would be of interest to 

 see the behaviour of plants raised from cuttings from the distinct parts 

 of the trees. 



Delphinium sporting. — Mr. Chittenden showed a piece of an in- 

 florescence of a Delphinium from Wisley bearing blue flowers, the great 

 part of the inflorescence having produced white ones. 



Precocious seedling orange. — Mr. Manson, of Egypt House, Lon- 

 don, E.C., sent a seedling orange which bore a terminal flower within 

 one year of the sowing of the seed, a very unusual occurrence. 



• ^ — i 



Scientific Committee, July 16, 1912. j 



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



members present. 



Delphinium consolida sporting. — Mr. Hales, A.L.S., showed in- j 

 florescences of D. consolida with all the flowers on one side white. They ' 

 had appeared in a bed of the ordinary D. consolida at Chelsea where no 

 white forms had been seen before. 



Virescent Delphinium. — Mr. F. Paton of Dulwich showed inflor- 

 escences of a blue garden form of Delphinium, with all the flowers 

 virescent, the foliose character of the parts (the stamens were not 

 affected) varying in degree. In some, the carpellary leaves were still 

 folded and closed at their edges, the ovules being represented by the 

 serrate margins of the folded edges : in others they were quite open. 



Plants injured by fumes jrom. smelting uwrks. — Sir John Llewelyn 

 exhibited leaves of a number of different plants from cottage gardens 

 in the Swansea district showing very serious injury, in the form of 

 dead margins and patches. This injury had appeared simultaneously 

 with the introduction of a new method of extracting zinc from its ores 

 in the neighbourhood, and it was thought that probably the greater 

 volume of fumes emitted from the stacks, and possibly a difference in 



