xiv 
ROYAL IIOIITICULTUJIAL SOCIETY. 
Laing, a number of grafted Abutilous sliowing the effect of stock on 
scion, and scion on stock. Thus A. onegapotamicum (green) grafted 
on A. Thoynsoni (variegated) had become variegated like the stock ; 
A. Thomsoni grafted on A. merjapotamicurn had caused the produc- 
tion of variegated shoots from the originally green stock as well 
as from the scion ; A. Thomsoni grafted on A. megapotamicum and 
then pinched back had the effect of inducing the buds on the stock 
to break, and these, too, produced variegated leaves ; another 
green Abutilon, Due de Malakoff, grafted on A. Thomsoni, also 
became variegated in consequence ; so that the variegated plant, 
whether used as a stock or as a scion, has the faculty of imparting 
its variegation to the leaves and buds subsequently produced. 
Grreat interest was manifested in these specimens, and Dr. Mas- 
ters called attention to the remarkable experiment of M. Van 
Houtte, where the variegation ceased after the accidental removal 
of the variegated graft (see p. 55-1, 18G9), and to a paper of Pro- 
fessor E. Morren's lately published recording several cases of this 
kind mentioned in this and other Journals, and also to the cir- 
cumstance that the mere insertion of a detaclied leaf of A. Thom- 
soni into a slit in the bark of a green Abutilon was sufficient to 
innoculate the latter, even though the inserted leaf speedily pe- 
rished. Dr. Masters stated that at a future Meeting he would 
direct attention to other recorded cases of this interesting 
phenomenon. 
A specimen of a curious excrescence from the bark of a Camellia, 
sent by Mr. Miles of Enys G-ardens, Penryn, was then shown. 
The excrescence had much of the aspect of a Polyporus, but seemed 
to be an excrescence from the bark, from wliich it was with diffi- 
culty separated. In one case two branches had become united 
together, and the point of union was covered with this shell-like 
excrescence. None of the Members of the Committee nor any 
of the Camellia-growers present at the Greneral Meeting had ever 
seen anything similar. The only suggestion was that the adven- 
titious growth was the result of some injury to the plant. Dr. 
Masters undertook to submit the growth to microscopic exami- 
nation, and report more fully at a future Meeting, as also on 
a curious specimen resembling the " burrs " seen on Birch trees, 
but in this case stated to be formed on the roots of a Currant- 
bush. 
Dr. Masters further reported as follows on the Bridgesia spicata 
exhibited at the last Meeting : — 
