for an entire garrison, while that before, the washing was done in each
regiment, thus requiring the use of much space and causing much loss of
time.

Eight men are washed at once for five minutes, say 96 men per hour.
Every minute the men turn right about face, and when they are in file
each rubs the other's back.

Twenty-two pounds of coal and 260 gallons of water are consumed per
hour, and the boiler produces 130 lb. of steam.--_Le Genie Civil_.

* * * * *




HOW TO MAKE A STAR FINDER.


Being all of wood, it is easily made by any one who can use a few tools,
the only bit of lathe work necessary being the turned shoulder, K, of
polar axis. A is the baseboard, 9 in. by 5 in., near each corner of
which is inserted an ordinary wood screw, S S, for the purpose of
leveling the base, to which two side pieces are nailed, having the
angle, _x_, equal to the co-latitude of the place. On to these side
pieces is fastened another board, on which is marked the hour circle, F.
Through this board passes the lower end of the polar axis, having a
shoulder turned up on it at K, and is secured by a wooden collar and pin
underneath. On to the upper part of the polar axis is fastened the
declination circle, C, 5½ in. diameter, made of ¼ in. baywood, having