Perrysburg journal. (Perrysburg, Wood Co., O. [Ohio]) 186?-1965, 1894-07-21
SCIENCE AND INDUSTRY.


| from their food plant. He has now
proved that the colors of some cater
| pillars are made up of modified chloro-
| phyl derived from the food plant.
The Tyrians were the most expert
| Overs of ancient times. The fabrics
dyed with the famous Tyrian purple
did not assume their proper color until
| after two days exposure to light and
| air. During this time they passed
| through gradation of shades of yell
| low, green, blue, violet and red, which
| the dyers understood how to arrest
and fix at any moment.-Baltimore
| Herald.
Speaking recently at meeting in
| Newcastle, Sir Robert Ball limited at
the approach of a time when posterity
| might have to construct machinery
| that would be worked with heat OBJ
| tanned by the direct action of the suns
| rays. He showed on the screen u ma
chine which, by means of reflector,
| heated the water in a boiler large
enough to generate the steam required
| to move small printing press Lon
| don Inventions.
DR.. Letheby, the eminent English
| authority on foods. by series of care
| full examinations found that when po-
| tatoes were cooked without removing
the skins the loss of nutritive material
was but about per cent, against Ii
per cent. when the skins were removed
before boiling-a very wasteful process.
| Hence baked potatoes are not only
more palatable. but also evidently more
nutritious than boiled potatoes in either
case.
More than thirty-seven million
acres of land are invested by the rabbit
| pest in Victoria, Australia. During
the last eleven years the colonial gov
! ernment has expended nearly two mill
lion dollars in efforts to abate the pest,
besides the expenditures of individuals.
The rabbits are trapped for their skins,
over one hundred and fifty thousand
pelts having been purchased monthly
| in one town. The authorities of some
| districts have decided to employ phos-
| phorised wheat for the destruction of
| the rabbits.
Certain beetles have long been
| known to eject or give out a repulsive
| fluid from joints of their bodies, or
from their legs. or from eversible
glands NJ. Cuenot has recently studied
the cases of election of blood from these
| beetles. The fluid, however, is not
red, as the blood of insects is either
colorless or slightly yellowish. Lady
birds, oil beetles and other vegetable
feeders are such as possess this habit.
The winter has added to this list one
of our common beetles which sends out
a pale milky fluid smelling like lauda-
| l,A hot
emitted by certain moths of the Arctian
| family
| Farming in South Africa has its
drawbacks. A correspondent of the
Agricultural Journal, of Cape Town,
relates some of them. The locusts came
late in autumn and devastated the
pastures to such an extent that the
writer's 1.20O half-starved ewes raised
only 26O lambs. Then foot and mouth
disease broke out among his cattle, and
Is out of 65 succumbed, being unable in
their reduced condition to recover from
the facilitating effects of the disease.
| AT the time of writing farmers were
trying to harvest their oat-hay, but
heavy rains interfered; the grubs had
taken three -fourths of the ''mealies"
(maize or corn crop, and new genera
tion of locusts had Matched out, requir-
ing ceaseless effort to check their adj
vance before their wings grew.
The hogs legs perform a function.
not known to any other animal, and
that is an escape pipe or pipes for ths
discharge of waste water or sweat not
used in the economy of the body. These
escape pipes are situated upon the in
side of the legs. above and below the
knee in the forelegs, and above the
gambrel joints in the hind legs, but in
the latter they are very small and func-
tions light; upon the inside of the fore
leg they are, in the healthy hog, always
active, so that moisture is always there
from about and below these orifices or
ducts in the healthy hog. The holes in
the leg and breathing in the hog are
his principal and only means of eject
ing an excess of heat above normal, and
when very warm the hog will open the
mouth and breathe through that chan
mel as well as the nostrils.
Risks of Horse Racing.
Having ones horse win race is all
very fine, but few are the owners of
race horses whose winnings on the
track reimburse them for their prodig-
ious expenses. To get colt with q
pedigree costs in the first place from
two hundred to one thousand dollars,
depending on the character of that
pedigree. During two years the colt is
eating ils head off, and as he stands on
his legs at the beginning of his third
/ IL, l, cpA