The Bottineau pioneer. (Bottineau, N.D.) 1885-1895, 1893-12-09
A r Camera.

An enormous camera has been maze
in England. Hitherto when photo
graphic plates Of abnormal size have
been required a lens has been fitted In
to the wall of a dark room with stands
running from the interior to the ex-
terror on slides Dr. rails. This method
has served well for the making Of en-
largements or reductions, and that, too.
at the least possible cost. But 1t Is now
found insufficient for the requirements
of ordnance survey work, in which wet
plates must be taken for the produc.
ton Of the largest maps. To success
fully accomplish this work an Inn
mense camera has been constructed.
1t is said that it would, IL placed on
wheels. do duty as an omnibus, and
a further idea of it's enormous size Is
gathered from the fact that 1t is far
too big to be removed through an Ordi-s
nary door, and the front OF the shop
where it was made will have to be tax
en- out before it can be forwarded to- Its
destination. The Gamers viii take q
~plate-glass wet plate of 45x30 inches in
either Of the three dark slides. 1t ex-
tends to a total focus Of ten feet, and
has fronts Of different form to take long
or short lenses. The dark slides are
opened to expose the plates by revolv-
Ing curtains which can be drawn around
the back of the slide and run with
perfect ease and accuracy. The plate
glass by which the photograph is tak-
Ell weighs from % to so pounds lii
three-eighths Of an inch thick, and will
need two men to manipulate 1t. Tha
camera itself Is a double box Of Span
ish mahogany, absolutely provided 10
every part against shrinkage, and high
ly polished. 1t Is strengthened through
out by brass corners and angle plates.
Train Lighting by Electricity.
The introduction Of the electric light
for train illumination has been at
tempted on some lines In this ~country,
but the movement has not vet made
great Roadway. The general adoption
OF electricity, however, both for the
lighting and heating OF trains, Is only
a question OF time, and before long
the oil lamp, and even the gas Jet, Will
have passed as completely out Of train
use as the now morfbnnd car stove
Some encouraging figures are given ~
the report Of an English railway COM
poAy, Which, uuS dAESduy uIVEO 1OEty -
its trains with the electric light, 4
now proposes to extend the equipment. \
1t finds that at least Us per cent more
work Is got out Of Observation-Disclosures
trains than from those lighted with
gas. This, In the construction OF aaI@
100 trains, would mean a saving o.
something like $226,OOO In first cost
In other words, eighty-ive electrically I
lighted trains would do the work 0fs &
100 gas lighted trains. Where, beyond &
the advantage of a clear. bright, coetssy
and healthy light, the benefit and ecd4 kSss
omy Of the electric light Is shown y ins3
busy times and foggy weather, when
under ordinary circumstances gxs ligntrN
ed trains would have to be specially u
sent to the charging station or put 0oSsN
or working altogether.
Revolutionary Science,
The enthusiast iii science II muchSs
given to the methods of the miglkf
hunter, who delights to suddenly dlsSa
appear and be lost to human ken. Wal
dering away to the. remotest cOrneII4
Of the earth and returning after man 81
1 Ho We NJ a E3@