1902) MICROSCOPICAL JOURNAL. 43 
deposited by the moth, they look as though quite recently 
laid, making a beautiful top-light object for the 2-inch 
binocular. The untouched batch I have still in the origi- 
nal pill-box. They appear to be absolutely unaltered, 
and apparently as fit to mount as the group which I have 
mounted. We must not lose sight of the fact that the 
ova I write of were unfertilized, a fact that would of 
course, to some extent, bear on their subsequent conduct. 
Any information hereon from the experience of others 
would be useful to myself and to other readers,—JF’, R. 
Brokenshire, Exeter. 
MICROSCOPICAL SOCIETIES. 
Royat M. Socizery.—Nov. 20, four microscopes of great 
interest were presented to the society. Descriptions of 
‘three of these, prepared by Mr. Nelson, were read. Re- 
garding one made by Powell and Lealand in 1848, Mr. 
Nelson writes:—This form was the first instance in 
which the microscope was hung in atripod, and it was 
also the first where the fine adjustment moved a nose-piece 
by means of a lever inside a bar movement, and this 
specimen must have been about the last microscope made 
with the fine adjustment screw at the side of the bar, for 
it was in this year, 1848, that the screw was placed verti- 
cally above the lever, where it has remained ever since. 
Other features were referred to, and Mr. Nelson charac- 
terized it as historically an important and not very com- 
mon form of Powell and Lealand’s microscope. The next 
microscope described was an old one made by Hugh 
Powell, certainly before 1841, asin that year Mr. Lealand 
joined the firm, and his name would have been coupled 
with that of Powell, and the presence of a substage con- 
denser prevents it being dated earlier than 1839. An 
important feature is the stage, which has an arrangement 
for focussing by means of three wedges moved by a mi- 
