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POPULAR SCIENCE REVIEW. 
piece with a large field, and good objectives. The height, when set up for 
use, is about one foot, and the dimensions of the case which contains the 
instrument with two objectives, dipping tubes, and pliers complete, is only 
6| inches long, 3 inches wide, and If inch long. 
. PHOTOGRAPHY. . 
Combination Printing. — The advantages of being able to effect a judicious 
combination print from several negatives are more and more impressing 
themselves upon the photographer. One of the most familiar examples of 
this kind of printing is the putting in of skies in prints otherwise quite 
cloudless. In the early days of the art, a white sky in a landscape was a 
sine qua, non ; at the present time such a picture would not be tolerated. 
The landscape photographer keeps a set of negatives of clouds taken under 
different conditions of lighting, so that he can select for any landscape a 
fitting sky. This is the easiest kind of combination printing, because it does 
not require any exactness in registration ; but far different is the case when 
a number of figures have to be printed with a landscape background from 
different negatives : here the greatest mechanical nicety is required to 
prevent the junction-line of the two from being noticed. To such a state of 
perfection has this department of photography now been carried, that it is 
not merely possible but quite easy to combine the parts of several negatives 
in one print, in such a manner as to produce a mechanically perfect whole — 
whether it be artistically perfect depends of course upon the harmony that 
exists between the several pieces of which the picture is made up. A land- 
scape lighted from the right while its figures are lighted from the left 
furnishes an example of incongruity. Within the past few weeks, a patent 
has been obtained by Mr. B. J. Edwards for a printing frame, so constructed 
as to permit of combination printing being effected with the greatest possible 
efficiency ; and as a result of wbat may be obtained by its means, it will be 
easy to have a photograph of one’s own drawing-room taken (which requires 
a very long exposure in the camera) and introduce in it the members of the 
family, taken in the photographic studio under those circumstances of lighting 
most conducive to success in portraiture. This kind of printing is invaluable 
for picnic groups, cricketers, and other bodies, who may be singly taken in 
the studio, and yet form a completed group arranged in their field — a nega- 
tive of which will have been separately taken. 
Photographic Journalism. — The demise of a weekly journal, The Illustrated 
Photographer , is announced. The reputation it bore was latterly of an 
unfavourable kind, a good deal of personal and scurrilous matter having 
been introduced, without a corresponding counterpoise of ability. Its best 
illustrations, too, had occasionally done previous duty in the pages of other 
illustrated periodicals ; and this, together with incompetency in the editorial 
management, could lead to no other result than that which has befallen it. 
There are now only two journals devoted to photography in this country — 
viz. The British Journal of Photography , which is in its seventeenth annual 
volume, and The Photographic News , in its fourteenth volume. The Journal 
