128 
POPULAR SCIENCE REVIEW. 
the whole plan of the apparatus will he made kno'WTi in a short time. — Vide 
SilUman^s American Journal of Science and Art, July, 1864. 
Cheajy Form of Dissecting Microscope. — Mr. Highley has just devised a 
form of dissecting microscope for the use of amateurs and beginners, which 
bids fair to become popular.. It is somewhat upon the principle of the late 
Professor Quekett’s instrument (which was itself planned by Mr. Highley), 
and consists of a mahogany stand, supported by lateral folding props, bearing 
a vertical limb of brass, with a horizontal projection to which the lenses 
are fixed. The vertical limb, instead of being moved by rack and pinion as 
in the more expensive ajDparatus, is elevated and depressed by a simple lever 
which works beneath the stage, and gives an easy sliding movement to the 
XDiece. The lenses are two in number, and are of average focus and defining 
power. When placed in its case the entire instrument may be conveniently 
carried in an ordinary sized pocket. It is sold at the moderate price of 
12s. 6d., and was, we understand, devised to jneet the recpiirements of one of 
our large public schools, in which botany is, in future, to be a branch of 
education. 
Mr. Highley's new Dissecting Microscope. 
The following is a list of notices of papers on subjects relating to histology^ 
&c. : — 
Botanical Section — 
Peculiar Mode of Conjugation among Navicular Diatomacese. 
Presence of Y egetable Spores in the Atmosphere. 
Medical Section — 
Fungi as Agents in the Production of Disease. 
Development of the Upper Jaw. 
