lii PROCEEDINGS OP THE ROYAL HORTICULTURAL SOCIETY. 
on “ Tulips” illustrated by a large number of specimens and 
plates. The greater portion of the lecture will be published in 
the next number of the Journal. At the conclusion of the lecture 
the Rev. H. Harpur Crewe made a few observations, and proposed 
a vote of thanks to Mr. Elwes, which was carried unanimously. 
Lord Alfred Churchill stated that the Council has called a 
meeting of all horticulturists interested in the proposed Inter¬ 
national Exhibition of Horticulture, which he hoped would lead 
to the formation of a committee for the purpose of carrying out 
the suggestion. 
SCIENTIFIC COMMITTEE. 
Sir Joseph D. Hooker, C.B., President Royal Society, in the 
Chair. 
Exudation from Birch Bar-h, Sfc. —Dr. M. C. Cooke showed 
specimens of the bark of the Birch with a whitish exudation, 
which was supposed to be of a sugary nature, but which chemical 
analysis proved to be gummy. He also showed specimens of 
'Wheat from the north-west provinces of India of so fine a quality 
as to be worth nearly as much as the Australian Wheat in the 
market. 
Hybrid Plants. —Rev. H. H. Crewe showed an accidental 
hybrid between Iberis Garrexiana and I. ciliata , also leaves of a 
hybrid between two species of Symphytum. Dr. Masters showed, 
on the part of Messrs. Yeitch, leaves of a hybrid between a species 
of Alocasia and Caladium Chantinii. Mr. Elwes showed a remark¬ 
able hybrid Iris raised by Mr. Max Leichtlin between I. susiana 
and I. iberica , with the habit of the former and the flower of the 
latter, named il I. Van HoutteP 
Monstrous Fuchsia. —Dr. Masters showed from Mr. Harrison 
Weir flowers of a Fuchsia, in which the petals were either wholly 
or in part absent, while the stamens had their anthers dilated into 
petaloid, spoon-shaped processes, resembling the petals of Lopezia. 
From the same gentleman came flowers of a Polyanthus, with the 
margins of the petals rolled inwards, with the outer surface of the 
petals as deeply coloured as the inner, and with the stamens and 
pistils both short and of about equal length. 
Galls of Oalc. —Mr. MacLachlan alluded to some recent re¬ 
searches on the dimorphism and alternations of generations in 
sundry Cynipidcc. Not only do the insects exist under two 
