xxii proceedings of the royal horticultural society. 
Scientific Committee, Maech 26, 1895. 
Dr. M. T. Masters in the Chair, and five members present. 
Orchid Leaves decayed. — The report from Kew upon the 
specimens brought to the last meeting was as follows : " Fungi 
and bacteria are absent from all the specimens, and the disease 
is entirely physiological, being caused by the substance of the 
leaf at particular points becoming saturated with water. This 
causes the formation of numerous oil globules, followed by 
degeneration of the chlorophyll corpuscles and cell contents." 
This disease is caused by the activity of the roots being in excess 
of that of the leaves. Less moisture at the roots, and a circu- 
lating with a not too damp atmosphere, is the remedy. 
Dendrohium with Two Lips. — Dr. Masters had examined a 
flower of the plant exhibited at the last meeting, and found that 
the extra lip was accompanied with a bifurcation of the single 
central cord belonging to a normal labellum, so that it was not 
due to a fusion of two organs, but to multiplication by cliorisis 
of one. 
Ferns injured by Mice. — Mr. McLachlan described the 
injuries done to Ferns during the hard frost by mice. Mr. 
Morris attributed it to a want of water, as he had experienced 
a similar trouble on board ship when a consignment of Cin- 
chonas and other plants were sent from Jamaica to New Orleans, 
and was much injured by rats and mice. By placing pans of 
water among them, however, no further injury occurred. 
Aspidistra attacked by Fungi. — Dr. Masters exhibited a leaf 
much decayed in parts, with peculiar black marks upon it. It 
was referred to Kew for examination. 
Odontoglossum cirrliosum. — A specimen was sent by Mr. 
Smee, remarkable for the flowers being associated with leafy 
bracts. 
Hyacinth malformed. — A peculiar specimen was sent by Sir 
Charles Strickland, ]>art. The stem was exceedingly slender, the 
flowers remote, small, double, and campanulate ; probably an 
accidental variation from impoverishment. 
Galls on Lejjlospermitm. — Dr. Masters showed a specimen of 
these received from Baron von Mueller from Australia. Mr. 
McLachlan undertook to examine them. 
