The Camden chronicle. (Camden, Tenn.) 1890-current, 1904-02-05

graph, produces pictures as well as
sounds. 1t shows, for instance, the
singer giving song.
Side by side In Greenland tMass.)
house is portion of a shell exploded
in Paris at the time of the Commune
instruction, and one of the fossil
footprints made millions of years ago
in mud which is now our red sand
stone. The species of bird which made
the track is now extinct.
1t is commonly assumed by ornithol-
ogists that every species of migratory
bird breeds in the most northern por-
ton of it's range. 1t has been found,
however, that the Australian sand dot
terel goes south to breed, travelling to
the south of New Zealand, or as far
toward Antarctic as it can now get.
The best calculation that can be
made shows that the average number
of children in the white native family
century ago in the United States was
more than six; in 1880 1t had fallen to
less than FIVE; in 1860 to less than
four; in 1872 to less than three; in
1900 among the upper classes" in Bos.
ton, to less than two.
The first typewriter that produced
good results, although 1t was very
slow, was made by Worcester man,
Charles Thurber, in 1843. The first
typewriters that were put on the mar
ket were made in 1874. Since Thur
bers machine was made, there have
been over 1000 patents granted for ma
chimes and improvements.
Long-distance cycling gives fur
Their proof of the enormous endurance
of man. In the six-day international
cycle race of 1899 the winners-Miller
and Waller-covered 2733 miles be-
tween the Monday morning and Satur-
day night. Brown, the vegetarian cy-
clist, recently rode on open roads, Of
ten in great heat, and again under
pouring rain, 1900 miles in 100 hours.
An investigation of paving stones
has been undertaken in Ireland by
Professor Jolly. He finds that resist
ance to wear varies directly with the
amounts of quartz and felspar con-
tanned, the completely crystalline ig-
neous GRANTEES, ETC., being as rule
the toughest Rocks that are decidedly
porphyritic, porous or CLASSY are to be
avoided. A certain coarseness of grain
is usually desirable, as fne-grained
rocks, like a certain Welsh diorite, are
liable to become slippery
The skull of the bull musk OK is
remarkable for the development of the
eye orbits, which project sufficiently
beyond the plane of the frontal bones
to compensate for the interruption
the horns would otherwise make in the
range of vision. The musk OK, how
ever, does not seem to rely greatly on
keenness of sight, far less on acute
ness of hearing, for the ears are of
small dimensions and are completely
covered by the heavy growth of fur
about them. The organs of scent are
evidently more highly developed, and
they exact of the hunter his greatest
cunning.
The electric discharge between two
vessels of mercury in partial vacuum
is the most efficient form of artificial
lighting yet discovered. In a recent
test by w. G. Geer the mercury ter
minals were about four-fifths of an
inch apart, and an arc of two inches in
length was produced by direct cur
rent Of ff6 volts. Nearly 50 percent of
the energy supplied was converted into
visible light. Turning to other lights,
the Geissler tube showed an efficiency
of 80 percent; the ordinary arc lamp,
10; acetylene gas, 10; the incandescent
electric lamp, 6, and the Argand gas
burner, 1.6.