Potes on Photo-Micrography. 
By G. Harris Morris, Pu. D., F.C.S., F.I.C. 
(Read before the Microscopical Section, February 26th, 1886.) 
rq) F we turn either to the standard works on the micro- 
scope or to the works dealing more particularly with 
the subject of these notes, we find that the practice 
of photo-micrography is apparently accompanied by 
the use of very cumbersome and very costly apparatus, the 
description of which is sufficient to deter the student from 
attempting to master this branch of microscopy. For instance, 
we find a very full and comprehensive chapter on Photo-micro- 
graphy in Beale’s “‘ How to work with the Microscope,” in which 
the methods of the masters of the art-—Drs. Woodward, Maddox, 
Abercrombie, Wilson, Mercier, etc.—are described and figured. 
In some cases the use of a specially fitted room is necessary, in 
others tables or base-boards many feet in length must be used, 
whilst the arrangements for illumination, varying from a complex 
heliostat to an oil-lamp with a system of lenses, are most elaborate, 
and appear to exert a great influence for good or evil on the 
nature of the resulting picture. Even in a little book recently 
published on this subject by Cowley Malley,* a somewhat 
elaborate arrangement is recommended. 
In by far the largest majority of these arrangements we also 
* “ Photo-Micrography,” A. Cowley Malley, 2nd edition, 1885. 
