The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1897-08-08

Hahn. He maintains that primitive man
was an omnivorous feeder upon whatever
could b9 picked up, and that he then be-
came Sevcrally a hunter. a fisher, planter
and a herder. but that these modes Of gam
ing a livelihood were not taken up success
slvely as an evolutionary series. lie nnds
barley to have been the first cereal and
wheat the latest Cattle were first domes-
tcated as draught animals, especially TO
draw the plow. and their milk was not used
as food until long afterward. The wagon
is assigned religious origin. 1t is believed
to have had four wheels derived from
spindle whorls, and to have first trans
ported efhgies of the goddess of fertility
The theory that under small pressure, as
in the upper atmosphere, oxygen should ex-
list entirely as ozone, has been worked out
by Mr. William Sutherland. The ozone
changes partially to oxygen as the pressure
increases, although the change is not COM
plete even at high pressure. 1t is found that
the proportion of ozone in the atmosphere
at the earth's surface should be about one
volume in seven thousand, while the actual
proportion is about one volume in a million
"a difference between theory and fact that
is accounted for by the chemical activity of
the ozone, which causes II to unite readily
with metals These deductions explain the
current view that the air OF elevated re-
gions is highly charged with ozone and
show also that there must be suhcient
ozone in the atmosphere to give the sky
much OF its blueness.
The diving cabin, or submarine travel
err" of M. Patti del Pozzo, which has been
used in the Seine, and is believed to be
suitable for deep-sea explorations. is ten
feet in diameter and weighs ten tons. 1t
is moved by three screws and a helm
worked by electricity. The cabin, which is
entered through a manhole. is claimed to
have an air supply sufficient for forty
eight hours for four persons, is lighted by
electricity and is provided with levers or
hand spikes for working the shovels, picks.
graphing irons, etc, on the outside OF ne
machine Concal tubes, provided with
lenses give views of the ground and eX-
terror OBJECTS in all directions. Communl-
cation with land or a boat can be Kept up
through a telephone, and even If the cable
supporting the apparatus should break 1T is
only necessary to touch lever 10 cause
two tanks containing ballast to oVerturn,
when the globe will at once rise to the
top of the water.
Diseases have their local habitations,
says the London Saturday Review. Some,
like tropical animals and plants, live only
in the tropics; some, like consumption, are
gradually spreading over the whole earth;
others, like leprosy and smallpox, are
gradually becoming limited in their distri-
button. and may actually be tending toward
extinction. Again, there are regions to
which diseases have never reached. On the
SUBMITS of high mountains and in the cir
cumpolar snowfields the earth and air and
water are as barren of the microbes of
disease as they are of animal life. With
out question, if hansen and his companions
had been exposed to the same hardships
and the same unsanitary conditions in these
islands, the lowered vitality of their bodies
certainly would have been unable to resist
the continual bombardment of germs to
which we are all subjected. In country
like Britain, thickly populated for many
centuries, and with the freest circulation
of population, it cannot be doubted that
every yard of surface contains the germs
Of the more common diseases, and the ma
tive of some newer land, brought over here,
falls a victim to our plague-stricken SOIL
BY generations of a destructive elimina-
ton we have become highly resistant to our
native diseases just as the gold coast ha-
tiVes are less susceptible than we are to
their own local diseases. But we are not
fully protected, and cancer and consump-
tion-two of our common scourges-still
take a large annual toll 1t may be as
sumed that both are due to micro-organ-
isms the mcrobe of consumption being
we'll known, that of cancer being as yet
only suspected. Probably no inhabitant of
Britain escapes infection by the cancer or
ganism: certainly none escapes infection by
the microbe of tubercle. Most of us, fortu-
nately resist the intruders and are unaf-
fected nv the disease.