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526 Miscellaneous. 
photography professionally in England. According to the 
census of 1861, the number of persons who entered their 
names as photographers was 2534. There is reason, how- 
ever, to believe that these figures fall short of the real 
number; since then it is probable, that the number has 
been doubled or trebled, and that including those collate- 
rally associated with the art, it is even four or five times 
that number. But these figures fall far short of the number 
interested in photography as amateurs. We are informed 
that eight years ago, in establishing a periodical which has 
since become the leading photographic journal, a large pub- 
lishing firm sent out twenty-five thousand circulars—not 
sown broadcast, but specially addressed to persons known 
to be interested in the new-art-science. The number of 
professional photographers in the United States, is said to 
be over fifteen thousand, and a proportionate number may 
with propriety be estimated as spread over continental 
Europe and other parts of the civilized globe. But amore 
curious estimate of the ramifications of this industry may 
be formed by a glance at the consumption of some of the 
material employed. A single firm in London consumes 
on an average, the whites of two thousand eggs daily in 
the manufacture of albumenized paper for photographic 
printing, amounting*to six hundred thousand annually. As 
it may be fairly assumed that this is but a tenth of the 
total amount consumed in this country, we obtain an 
average of six millions of inchoate fowls sacrificed annually 
in this new worship of the sun in the United Kingdom 
alone. When to this is added the far larger consumption 
of Europe and America, which we do not attempt to put in 
figures, the imagination is startled by the enormous total 
-inevitably presented for its realization. In the absence of 
exact data we hesitate to estimate the consumption of the 
precious metals, the mountains of silver and monuments of 
gold which follow as matters of necessity. A calculation 
based on facts enables us to state, however, that for every 
twenty thousand eggs employed, nearly one hundred 
weight of nitrate of silver is consumed. We arrive thus at 
an estimate of three hundred cwt. of nitrate of silver an- 
nually used in this country alone in the production of pho- 
tographs. Todescend to individual facts moreeasily grasped, 
we learn that the consumption of materials in the photo- 
graphs of the International Exhibition of 1862, produced 
by Mr. England for the London Stereoscopic Company, 
amounted to twenty-four ounces of nitrate of silver, nearly 
