B5Y 
1864.] The Ophthalinoscope and Ophthalmoscopic Photogrophy. 55t 
ing of microscopical objects and makes no pretension to scientific 
knowledge beyond what is immediately necessary for that purpose. 
It is an unassuming little brochure, without illustrations and by 
no means attractive in appearance, but is composed by an author who 
appears as modest as he is enthusiastic, and contains, besides his own 
experiences in preparing and mounting objects, the most approved 
methods of many of our most eminent microscopists, of Dr. Beale, 
Dr. Golding Bird, Dr. Carpenter, Mr. Rylands, Mr. Hepworth, &c.; and 
it instructs the student, not only as to the best method of mounting 
objects, but how to select those which are the best suited for permanent 
preservation. It wants a table of contents, and would suffer nothing if 
the head-lines of the pages were a little more explicit, instead of being, 
as at present, a mere repetition of the title of the work from beginning 
to end. 
We offer no apology to our readers for having occupied so much of 
their attention with an account of these two little works, for they 
represent what is becoming one of the most important intellectual 
pursuits of our middle and upper classes, and is happily supplanting 
in the lives of the growing youth of our day many frivolous and mis- 
chievous practices. Hundreds there are, both young and old, who would 
like to follow some intellectual employment during their leisure hours, 
if they but knew which to select and how to proceed; to such, then, 
we would recommend a good microscope, and its employment under 
the guidance of the two little works of which we have here endea- 
voured to give an unprejudiced account. 
THE OPHTHALMOSCOPE AND OPHTHALMOSCOPIC 
PHOTOGRAPHY.* 
In the former part of this number of the ‘ Journal of Science,’ we have 
given a sketch of the history and uses of the Ophthalmoscope, the 
practical application of which the two publications whose titles are 
named at the foot are intended to forward. Mr. Hogg enters fully 
upon the principles upon which the instrument is formed, the best 
method of using it, and points out the changes in the fundus of the 
eye which are discovered by it. 
From his previous writings on the microscope, and his familiarity 
with the laws of optics, the author was well qualified to appreciate the 
importance of the ophthalmoscope ; as he was one of the first to direct 
the attention of the medical profession to the subject, so he has been 
one of the most diligent students in this country in its application. 
The first edition of this book in 1858 was a small, unpretending 
* «4 Manual of Ophthalmoscopic Surgery: being a Practical Treatise on the 
Use of the Ophthalmoscope in Diseases of the Eye. By Jabez Hogg. 3rd edition, 
re-written and enlarged. 8vo. Churchill & Sons. 
‘A New Ophthalmoscope for Photographing the Posterior Internal Surface of 
the Living Eye, with an Outline of the Theory of the Ordinary Optialmoscope. 
By A. M. Rosebrugh, M.D. 
