177 
lil'toen minutes. The plate was then removed, and presented 
a beautiful picture of the object, magnified about sixty-five 
diameters. The results of the experiments altogether, justify 
the strongest anticipations of future success. 
Mr. Parry described a simple form of camera which he 
had used, and in which he dispensed altogether with the use 
of the microscope body ; simply inserting the object glass 
into the lens aperture, and fixing a suitable stage to support 
the object. 
Messrs. Lynde and Brothers stated their intention of 
attempting to photograph thicker and more opaque objects ; 
and Mr. E. VV. Binney promised to supply them with sec- 
tions of fossil woods, which he said had been drawn by 
artists, but with poor success, as the tendency of draughts- 
men was to make them too sharp in outline ; the objects 
losing their characteristic appearance by over definition. 
Mr. Lynde exhibited some fine specimens of Melicerta, 
using for their illumination Wenham’s parabolic condenser 
with excellent effect. 
A fine specimen of Navicula Anceps was also exhibited by 
Mr. Lynde, who succeeded in resolving the apparent lines 
on their surface into dots with Messrs. Smith and Beck’s ^th 
inch object glass. 
Some fine specimens of Ferns were exhibited by Mr. 
Thomas Brittain. 
Euuata. — P age 1()8, lines 27, :tl, and n(,./or views, read veins. 
