The hatchet. [volume] (Washington, D.C.) 1883-19??, 1900-07-08
POPULAR . SCIENCE.


held by Sir William Banks to be of the
increase of He finds the view supported by the fact
that increasing chiefly among the males who have
added to their indulgence in heavy food much more than the
females
The photographng of condensed air that attend the
Prosst Wood has photographed of sound showing the
alternate condensation and arefacton of air An elecrc
flash estimated mionth of second Eliminates the
OF the sound in this experiment
During the winter Dec q to March 2 the earth is nearest
the though the northern hemisphere turned from the
that it does not get its rays directly, but obque
angle The earth requires time to throw oil the heat absorbed
during this fact for the chief cold of
winter coming after Dec. q, as a rule
Du Bounier French physician, recently described before
the Academy of Medicine method Of testing or
deafness namely by applying tuning fork to the knee or
of the bony structure He said that sound
ear hear the Of the fork but in which
disease had already made nroads could perceive distinctly
Live plants are plants with their particles in motion building
up the plants structure This motion is known vital ener
gy Physical energy results in decomposition. The material
which plant structure is formed is known proopasm
The of flowers result from varying degrees and directions
of vital energy but what starts the motion in protopasm has
not been demonstrated
Russian chemist has found that copper is dissolved by
alkaline solution of geatine the copper going into solution as
cooda copper The old rule that the metals insoube
water being widely disproved solutions metallic gold
mercury silver and of "copper" having been prepared
quite recently In all these the metals in very fine cOnd
tion, bat are -tFue metallic solutions
The long eeers or antenn of insects are in reality sense
organs has been found that they covered with tiny pits
which These pits supposed to be the organs
Of the insect One often notices touch their 'feel
err when they together they may communicate with each
this way by their organs they under
other They thought be principally the seat
the organs of SMELL but their have not been fully deter
mined as yet
Capt Eckho of the La Hesbaye from Antwerp o
Baltimore unwilling to slacken speed while off coast or
escung savage casaways passed by small low ice
berg which four large polar bears They had evidently
carried away when the ice field broke from arctic ga
co If the bottom of the where their bones finally rest
ever lifted and ithed dry rock the geoogt Of the future
will easily demonstrated problem of possible very low
latitude gaciation, if he so happens to regard it.
The London Optcan reproduces the views Of DR. Koz
Russian physician fatigue Of the Whether muscular
retna fatigue of the eye says Dr. Koz may be approx
maey measured by the number of eyed movements nvo
untay binks in specified period BY this SYSTEM than
three movements per minute indicate thoroughly unsuitable
illumination The experimental results obtained by this
what crude method given Candelgh 6S movements
per minute gas 28; sunlight, 22; electric light 49,
At the latest annual meeting of the Geological Society of
America Prof c. Russell called attention to the recent dis
covery that many Of the and lakes in the southern
nnsua of Michigon rich in caCareous mari suitable for
making Portland cement Although partly composed of shells
Michigan mari is principally chemical preciptae which
still being formed The precise method OF its formation
not yet understood The supply practically nexhausbe
Large works have lately been constructed others in
contemplation and Professor Russell says that Michigan
easily take leading place in that industry
Among the most remarkable glmpses into hidden of
nature that scientific advance has afforded the re
ouent discoveries of organisms in unexpected places
where they produce phenomena heretofore supposed arise
from other For instance Dr. A. Peterson of Upsaa
Sweden has ascertaned preparations fish
containing purpose of preservation salt the of
fifteen per gow uXuanty and he
cudes the avors and odors that peculiar various
due to the micro organisms with which they
crowded.
Morris Gibbs describeswhat probably thousands of our
readers have obervedhe curious lowering dancing
habit of species of twownged flies which assemble in groups
of twenty hundred more in spot sheltered from
the wind and indulge in fantastic dance for hours time
motions consist of alternate rising and falling in periods of
few seconds and distance varying from
feet become interested in their sport
is that they cannot driven away from another
but
Many species insects have the habit of lowering in the
some in parties only and some singly