Ixxxviii 
EOTAL HOETICULTURAL SOCIETY. 
continued wet weather, as the plants under cover were equally 
affected. 
The Secretary read extracts from a letter from Dr. Schomburgk 
respecting a substance known as mineral gamboge. It occurs 
in large quantities on sand near the river Coorang, varying in 
thickness from -^^J to 1| inch. On microscopical examination it 
appeared to be a condition of some Collemal, exhibiting in the 
upper granulated surface the moniliform chains of gonidia cha- 
racteristic of the group. 
Mr. C. W. Strickland sent rhizomes of Adiantum setulosum = 
A. diapJianum, bearing alternate tubercles analogous to those of 
LeguminossB. Dr. Masters said that the root-tubers of Nephro- 
lepis tuberosa were of the same nature. The Secretary has since 
obtained specimens of the latter which had parted with every par- 
ticle of starch. 
The Secretary again exhibited Wheat attacked by DilopJio- 
spora graminis and a graft of Camellia illustrating the views 
lately brought forward by the Chairman. 
Mr. Laxton brought plants of variegated Pelargonia inarched 
with self-coloured varieties. The graft was in no case affected 
by the stock. The specimens showed, moreover, that many va- 
rieties or species quite distinct in appearance will inarch with 
those which are very different. 
A twig of Beech was brought by Dr. Masters with a decayed 
spot which was just analogous to the disease of Yine-shoots 
from Australia exhibited at a former Meeting. 
He brought also an Ustilago on Bromus mollis, from Mr. 
Earley, which, on examination, was founjd to be Ustilago bromivora, 
Messrs. Ottolander, of Boskoof, sent leaves of ornamental trees, 
on w^hich Prof. Koch promised a report. 
The Chairman then read a paper on Blights, which will be 
published in the Journal. 
Dr. Bastian made some remarks on spontaneous generation. 
The Meeting then adjourned. 
