JULY— SEPT. 1857.] Stereoscopic Porlraiis. 
253 
This might be said of almost any book, I suppose every book, 
of the kind. What is a learner to do who has no better materials ? 
It is destructive for a learner to use a book, when he is not sure 
whether the sentences are Tamil or not. 
I mention these particulars of this book, as illustrative of the 
mistakes, and undigested ideas that are current on the subject. 
X. A 77iode of taki?ig Stereoscopic Portraits icith a common 
Camera. By Lieut. L. Paxton. 
(Communicated to the Madras Photographic Society and by them to the 
Journal for publication). 
Thinking it may be useful to Photographers who wish to take 
Portraits for the Stereoscope, but who have only a common Camera 
I send the plan of an addition by which this may be done. 
As very nice work is not required, it may be made by an ordi- 
nary carpenter and at a very slight expense. The time taken to 
do both pictures is but little above that required for the two ex- 
posures. The back of the Camera B. re- 
mains unaltered with the exception of thin 
strips of wood c. c. which are attached to 
it to receive a thin screen S. which sepa- 
rates the pictures : the length of the screen 
depends on the focus of the Lenses. 
There should be as little interval between 
it and the exposing frame at one end, 
and the back line of the combination on 
the other as possible. 
The front of the Camera required may be made of teak wood in 
I 
