The Green Forest tribune., 1892-04-14

be heard the distance Of one mile.
1t is astonishing that so small an in
sect can Fl as it does, four cubie
miles OF air with its music, yet this
is fact recognized by our natural
lists. By the wave theory this in
sect, by simply rasping its legs
across the nervures of its wings
creates an agitation and displace-
n5nt of air which converts the
whole four cubic miles of atmos-
phere into waves. Each wave con-
sisting of condensation and rare
faction: the condensed portions con
tanning a sufficient addition of heat,
above the normal tempature TO add
one-sixth to the velocity OF the
sound. We will now point to the
consequences of the above suppo~
sition. Within the four cubic miles
there are over 5000, 10000 square
inch colums of ali, each exerting a
pressure in all directions of fifteen
pounds, which, in the four cubic
miles is equal to 120, 600, 600 tons.
Now, if sound can travel only by
air waves and those waves must be
constituted of condensations and
rarefactions, and the ocondensations
can only take place when the parti-
cles are crowded closely together.
and the rarefactions when the par
ticles are separated more widely
and every particle constituting an
air-wave must make = small excur-
sion to and fro every time wave
passes, it necessarily follows, if the
theory be true, that the locust
simpl y by moving his legs, displaces
tho 16,000,000,000 inch columns and
then restores them to their orig
inal places 40 times second
tone being the az. 1t is an absur
dity 20 believe that this small insect
can exert a force of l20, 100000 tons
per minute. Now we come to the
explanation given by the corpuscu-
lar theory, which employs oder to
sustain the supposition that locust
can fill tour cubic mile1, with sub
stantial emissions and not noticahly
reduce its weight. In proof OF this
we have the following comparlsoAs:
''If we take piece OF musk the
size of locust it will permeate
four cubic miles of air so that the
oder will be noticeable, yet it the
original mass be weighed with the
most sensible balance it will show
no reduction in weight" Also "a
hound will follow the direction of
y fox, hours after the fox has pass
ed. The hound does not depend
on touching the track OF the fox, or
even following the exact path. So
defined and substantial are the oders
arising from the track of the ioX that
the dog will instantly decide the di-
recion which the fox has takan. AL
though this oder is SO substantial AS
to remain .or hours there would be
no elimination in the wei. BIT OF the
fox, though he had travelled many
railes." Hall. the founder of the
corpuscular theory of sound, be-
lieves these are sufficient proofs that
locust can fl four cubic miles of
III, with corpuscular emissions. W.
will refer to the transmission OF
scent again before this series of es-
says are finished.
Steele gives US a snppositios
which some physicists think is
strong argument tor the. wave-theo-
ry, that is: 'sthere would be no
sound were thcre no ear to catch
the vibration. An oak in the for
est tails and if there is no ear To
hea- it the old oak drops quietly to
it's resting place" Also, .there is
no scent where there is no nostril
70 detect is" These viii be spok en-