Miscellaneous. 525 
of steam were generated in three minutes. By working 
out this result to an application on a great scale, the desired 
end will be accomplished, and fully two-thirds of the space 
now required in a steamship for coal may be taken for 
cargo. For the stowage of oil many nooks and corners in 
a ship, now useless, might be advantageously employed. 
In the ‘ Persia,’ a vessel of 3,500 tons, 1,400 tons have to be 
set apart for coal. Hence it is easy to see how largely the 
“margin” for profit will be increased. The saving to such 
a Company as the Cunard, or the Peninsular and Oriental, 
by the substitution of oil for coal, would be reckoned by 
ten of thousands a year.—A theneum. 
A. PROSPECTUS has been issued of the Bengal Science 
Association to promote the development of social science 
in that presidency. The Hon. W. Seton Karr is to be 
president. 
THE CATTLE PJ.AGUE.—The aggregate number of cattle 
attacked by the disease since its commencement is 253,891, 
and 52,657 healthy animals have been slaughtered to pre- 
vent the spread of the disease. 
Dr. CLEMENT KING has invented a little box respirator, 
for breathing safely noxious vapours ai1.d smoke in mines, 
tunnels, and at fires. 
MILITARY.—The prevalence of htart disease in the 
Army, induced the War Office authorities some time since 
to appoint a Committee to report on the influence on health 
of the accoutrements and knapsack, and to make suggestions 
with the view to obviate faults in the equipment of the 
policies. The committee im their report; recommenda 
system of equipment, which shall offer no impediment to 
the free play of the respiratory organs. They propose to 
reduce the weight to be carried, and to distribute it more 
equally, to substitute for the knapsack a bag, which is to 
be supported by straps, attached to a yoke, in fact the bag 
is to be carried in the same way as the milk pail is, the load, 
at the same time is to be lessened. A complete trial will 
shortly be made to test its efficacy, and should it prove of 
service, a great want will be supplied. 
STATISTICS OF PHOTOGRAPHY.—The rapid growth of 
new and special industries, says the British Quarterly Re- 
view, is a fact so characteristic of the present day, that the 
statistics of photography can scarcely be regarded as won- 
derful, viewed merely as a question of cconomies. Never- 
theless, some of the facts cre sufficiently startling. Twenty 
years ago one person claimed the sole right to practice 
all 
