convinced ourselves Of the satisfactory results,
with sharp loaded firearms.
"HARTEG,


s'Doctor. counsellor of Forest Board.
"A. Won AWRZKOPPEN,


"High Forester"
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"HIgh Forester"
Extracts from The second report Of Prefessor Otto,


successor of the medical board, chemists


DC. DC. DC.


att seems that no other acid than that pro-
cured by The distilaton of ten parts OF salt
petre, AID six parts oil Of vrol, will confer up
on raw cotton its explosive power. Hydriate
of nitric acid (saltpetersaurehydriaD dissolves
the cotton. In good proper order the cotton
becomes transparent, and the fibre is not in
iured or dissolved. The acid by distlllation
first procuredlis best. Cotton dipped into ii
for half a minute, and then quickly pressed be.
tween glass plates, or boards, and washed al
terwards until il is free from acid, and subse-
quently dried, produces a superior exploding
article. Using the acid a second time, an IN
ferior article is made; but if after having been
washed and dried il is again dipped into the
acid, il becomes excellent. repetition OF the
manipulation necessarily augments the explod-
ing qualify Cotton may even remain IN the
acid longer than half a minute. That which
has laid 10 il as long as twelve hours was found
10 be very explosive. II is important that the
cotton be well washed when il is taken out Of
the acid !; for if any remains in il, saltpetre
flavor will attach 10 il when dry, and when
exploding will leave on anything white an acid
tinctare. The vivid explosion Of small ball
ofthe article, on white china plate, is the
criterion to test its good quality by. II must
fash like gunpowder, and leave no dust behind
it, If a particle even is seen il cannot be used
in guns. 1t also appears to be necessa sary that
the cotton, after having been dipped into the
acid and pressed, be immediately put into a
large quantity Of water II the cotton be put
into an insufficient quantity of water, it (the
cotlon) gets heated and small quantities of
cotton are also preferable for, if large, it forms
into knots OF bluish-green color, which are
so firm, as not to be easily loosened The more
the prepared article resembles the one in its
natural state, the better and more powerful it
is. With 5-4ths OF 6-4ths Of gran--480 grams
equal to an English ounce-balls Of one-half
an inch diameter were driven through boards
one inch thick. With 6 grams bullet was
driven from a rife, at a distance of As steps,
into an oak plank, to the depth of an inch; and
with four or grams, eAectual shots have been
made with fowling-pieces. The more readily
the cotton explodes, the greater the care to be
taken in handling it.'


Professor Shonbein, at an experiment made
in presence of one of the editors of the Times,
tested some gun-cotton which had been inn
mersed in water sixty days, and found it as
good as when perfectly fresh, after having been
dried. a