The Sentinel. [volume] (Trenton, N.J.) 1880-1882, 1882-06-10
Science-ExperimentaI and
Otherwise.


two ounces of dextrine in mixture of
one ounce OF acetic acid and five.
ouneesgo Of 6water. When ISOLATION Is.
effected and the nucilage has cooled
add one ounce of alcohol.
Special poisons are secreted by the
toad, 'salamander. newt, etc. M.
Paul Bert has collected liquid from
the glands on the neck of the frog,
which caused the death, with convul
sions, ofa sparrow to which the sub
stance had been administered.
A good cement for glass is gelatine
or glue treated with bi-chromate OF
potassium. The mixture must be
made in the dark. The pieces are
pressed together for some time and
then exposed to the sun. The cemen-
ted glass will not be effected by warm
water.
The latest invention reported by
japanese journal is that of Otsuka
Mnakichi, who, after extensive ex-
periments, is said to have succeeded in
making rifles of silk. They are des-
cribed "as rigid as iron guns, while,
they are easy Of carriage and have q
very long range" w
The journal Of Science makes the
statement that no beautiful or useful
organic species, animal or vegetable,
becomes naturalized in any country
without human Intervention, while
the ugly and the .noisome contrive to
extend their range in spite Of mans
efforts to the contrary. @
Claus Spreckles, of Honolulu, San
witch Islands, was laughed at few
years ago when he purchased 10000
acres Of land situated st the foot of a
volcano, at 10 cents an acre. He broke
up the lava dust and mixed it with
vegetable mold. irrigated and planted
sugar cane, and new Spreckles Is a
millionaire.
In copperng castAron M. We'll uses
bath of copper sulphate rendered
strongly alkaline with an organic acid
added to prevent the precipitation of
copper oxide. To effect the same OBJ
ject MN. Mignon and Ronati employ
q distinctly acid solution of a double
salt of copper and any alkali with an
organic acid.
N. G. Delaunay has been studying
the influences exercised by the
greater or less intensity of the nutri
tive phenomena in cases of poisoning
by stry chime. Equal doses of strych-
nine were given to two frogs, one of
which had been kept active for a half
hour previously. The poison took eff
feet more quickly and more actively
upon this one than upon the one that
had been quiet. In another expert
ment the poison operated more
slowly and more lightly upon a frog
that had been bIed than upon the
other one, which had not been hurt.
When one of the frogs was bled after
taking the poison it exhibited a ten
dency to return to the nor nal condi-
ton in q measure as it lost blood.
The Journal of Chenatstry thinks
that if Latin is to be retained for the
pharmacop9ial nomenclature, it had
better be grammatical Latin. Those
who know. the language should not be
compelled to use barbarous burlesque
of its forms, in order to spare others
the small effort necessary for master
ing few infections and construct
ions. Let the changes in the nomen.
clature be In clearness, accuracy,
precision and conformity to modern
science-changes which are obviously
for the better, but let 'dog Latin" be
left to those who have never learned,
or, haply, have forgotten, the gram
NAUTICAL kind. The best of this pres.
cription Latin is bad enough to q
classical scholar, and to make it worse,
deliberately systematically, would be
intolerable. xtm s4. 90
The experiments Instructed by M.
Pictet to determine the density of H.
quid oxygen, hydrogen and nitrogen,
have been followed up by Messrs.
Cailletet and Hautefeuille, who have
facilitated the processes by previously
mixing the gases with carbonlc acid
and protoxide of nitrogen, whereby
the liquefsction is made to take place
more readily. The density of the Ii
guilds of the latter gases being known,
it is easy to compute that of the sub
stances under examination. The re-
suits of tests made at very low tenn
perature are favorable to the theory of
the relations that have been suggested
between hydrogen and magnesium,
oxygen and sulphur, nitrogen and
phosphorus but, as the freezing, point
of water is approached, discrepancies
are manifested which grow more and
more accumulated. -
ef Poets Laureate.
Poets laureate are SO called from an