Fort Worth daily gazette. (Fort Worth, Tex.) 1882-1891, 1888-04-30
POPULAR SCIESCE.
1t, ms of In;eres. to Artisans, Scientists and
Mechanics,

| Mechanics.
| Paper treated with mixture Of csm-
phor-oi and linseed oil becomes water
proof.
| A steel csr wheel is expected to run 3d.
600 miles, but very few Of them ever make
thzi distance.
| a new material called "leatherine" Is
al English Manufacture. lean be sold
q. Eve or Fix cents pound, is said to be
So tough as leather, and is designed for
packing and Begging.
Verra Givre, or hear frost glass, is an
article now made In Paris, SO called from
the pattern upon II, which resembles the
feGthery forms traced by frost on the
windows in cold weather.
| The Engineer says there is nc properly
recorded instance OF locomotive ever
attaining greater speed than eighty
miles an hour, and quotes Charles K
Martin rs saying that higher speeds are
mythical.
| Il gelatine be suspended In ordinary
alcohol it will absorb the water; but as 1t
is insoluble in alcohol, that substance
will remain behind, and thus nearly abso-
luje alcohol may be obtained without
distillation.
The new machine Just invented for
printing postsl cards prints them from
toe roll and turns them out IN packages
ready for delivery. 1t runs them off ST
the rate OF 800 q minute, with paper
bands pasted srouod eAcd twenty five.
1t is said one man eau look after two ma
chimes.
a Pittsburg mechanical engineer has
Invented 6 novel movable dam, by the use
of which he claims boating stage Of
water may be obtained in shallow rivers
st oil seasons of the year. The invention
has been examined by old river men and
pronounced practicable. The inventor Is
eighty-tWo yesrs cid.
Experiments have proved that the ten
sile strength of wet rope Is only one
third that of the same rope when dry;
and q rope saturated with grease or soap
IS weaker Still, as the lubricant permits
the flores to slip with gleater facility.
| Hemp rope contracts strongly on being
wet, aud Cry rope twenty-five feet long
will shorten to twenty-four on being wet.
Oil Of peppermint in vspor diluted even
to one part in 100000 will kill cock
roaches in one hour, they dying in con =
WILSON'S. OGe drop OF the Oil placed IN
der bell jar covering cultivation Of
cholera bacllli will kill both bacilli and
spores in forty-eight hou,s. l. is also
regarded as among the best surgical an
tiseptIcs, and Of great value in phthisis
and diphtheria.
| The American Cultivator recommends
q mixture Of hydraulic cement and skim
milk for painting farm buildings and
fences. The cement is placed in bucket
and sweet skim milk stirred until the
mixture is Of the consistency Of cream.
The proportions are about one quart OF
cement TO gallon OF milk. Color may be
added II desired. This paint is cheap
and durable.
Nearly twenty years ago DR.. Wilks d.
rected attention 10 the fact transverse
furrow appeared on the nails OF the hand
after serious illness. Medical liters-
| tura has since then contained few ref
ences to the subject; he again brought
the subject before the Pathological So
ciety ST. it's meeting on March 20, and re-
lated remarkable case. In thsr case the
furrow was caused by three days sea-
| sickness.
| A very good and sensitive barometer
may be made by gluipg together strips OF
red cedar and seasoned pine. a strip Of
cedar about thirty Inches long, enc ard
one hslf inches wide and one-eighth OF An
inch thick, is cut with the grain, and to
one side OF 1t must be glued strips OF pine
Of equal thickness, with the grain rum
ming scross that OF the cedar. This CON-
bination is Bet on end, and will, accord
to the state Of the westher, be found to
have bent over on one side or the other,
and this may be determined by trial
Manufacturers Gazette.
Fire under water can be produced by
placing piece OF phosphorus in COMIC
ally shaped glass filed with water and
some crystals Of cblorate of potash cover
ing the phosphorus, and then pouring
through long tube funnel or a glass tube,
few drops OF sulphuric acid down on
the mixture at tie bottom Of the glass.
Tongues of hsme can be seen flashing up
through the water. The intense chemical
action produces Sufficient hest to infsme
the phosphorus under the water. Where
there is sufficient heat and oxygen fire
will bum, whether in air or wster.
In the issue OF Science for April is q
letter from Chsrles F. Cex of New York
calling attention to book written by DR..
Edward Tyson, an English physician OF
high Tepute in his day, and published IN
1893, in which are found come very dis
tinct tendencies toward the modern doc
triae of evolution. The book was called
"Tne Anatomy Of Pygmie Compared
with that Of Monkey, an Ape and q
Man." and was the fruit Of his dissection
of what he called q "pygmie," which he
had somehow obrsined from Africa, and
which he was inclined to regard IS an
"intermediste link" between man and the
apes.
] An ingenious device for stretching EN-.
cry cloth for use in the workshop consists
Of q couple OF strips of wood about four
teen inches long, hinged longitudinally,
and of round, half-round, triangular OF
any other shape In Cross section. On the