The Baltimore County union. [volume] (Towsontown, Md.) 1865-1909, 1904-10-15

wQroVement IN the M1cL oScope-SlneinB
Eiehes-Aver-Ready Oxygen Medica-
ted Vegetables "A Love-Regulating |
Science World Darkened Period
Science We. Nature-A Long-5ought |
Metal-Burelar Asphyxiatine.
When highly maenihed. .the images Of objects |
under microscope reach the eye in pencil Of |
light so small that 1t is liable 70 be blurred by
defects Of che eye-lens or floating particles In |
the vitreous humor Of the eye. In an instru- |
ment lately shown the London Royal Society, |
W. ]. Gordon has overcome the difficulty By the |
use Of q second microscope with x-inch object |
glass. giving further magnihcation Of 100 diam
eters. the pencil Of light being expanded by an
oscilating ground glass screen 50 as to I'LL the
aperture Of this second microscope. With this
instrument diatom magniaed 1000 diameters
was shown wonderfully well defined and free
from blur. To give an idea Of this power, it is
stated that the same magnincation would cause
the eyeof house fly to cover an area Of BIZ
square feet.
Not all fishes are dumb, but many species emit
sounds and few give remarkable concerts. In
stances Of the latter have been collected BY
Henri Coupin, q French author. On the west
ern coast Of Borneo, Prayer one night heard mu-
steal sounds varying from the resonance of an
organ to the soft tones Of an eoIian harp; and
IN the China Sea United States naval officer
was struck by an extraordinary blending Of the
low notes Of an organ, the noise of bells and the
sounds Of great harp, the intensity causing the
vessel to culver. The pogonias or tambours Of
the tropical western coast of the Atlantic some
times congregate about vessels, producing a
maddening chorus.
The oxygenoph0re Of Sabbatier, the new |
French apparatus, stores Is liters Of chemically
pare oxygen In q 100 gramme tube Of agglomer- |
ated sodium peroxide. This little automatic |
generator gives or regular current of the gas |
sspkSizistsd person. disinfectins or any other Of
many uses
A beginning In the dosing Of plants as means |
Of treating weakness and disease Of the human |
body has been made at the agricultural bacteria
logical station Of Vienna. ArtihcialIy prepared |
foods containing iron salts often fail to have |
their intended effects, because the iron is not |
completely assimilated. The purpose of the ex- |
periments has been to increase the proportion |
Of iron in our natural vegetable foods. In the
nrst trial spinach was grown in soil to which
hydrate Of irGn had been added, and the plants
were found to have taken up seven times the
ordinary percentage of iron, and this without
injury. This iron, in form free from the de- |
tects OF the artificial preparations, is sufficient
Tor medicinal purposes. Other plants should |
give as good results, and great possibilities in
the hygienic and medicinal culture of comn,on
vegetables are suggested.
81
One OF the late new sciences has received the |
name Of "Eugenics, . and, as expounded bv DR.. |
Cation, it seeks to determine the laws govern |
ing neredity, and to apply them to the better |
ment Of the human race. Part of its work win |
De to show the bearing of the decline of the |
birth on national deterioration, and the |
conditions that promote thriving families. It |
VIII strive to regulate the passion of love. alb |
surd as this may seem. and much toward this IA
expected from placing social ban on unsuita- |
Die marriages. One observer declares that men |
and women now select life companions less care
fully than they do cashiers and cooks.
sss
observations in different parts of the world /
have suggested that the earth's atmosnhera "a |
whole was made less transparent than usnal |
10 1902 and that this popularity disappeared n |
1903 Prof. Cleveland Able, of the United states |
weather Bureau. is seeking evidence bearing ON |
the reality of this supposed phenomenon. the |
dates OF its beginning and ending, it's extenta and
its cause.
new German camera, for secret use is con- |
cealed in the head Of cane.
-
human sense organs lack the refined delicacv |
OF the instruments Of science. DR.. Carl SNYDER |
points out that countless millions of stars are |
discovered BY the Photographic plate and the |
telescope in place of the 5000 visible to the eve.
and that an object 10000 of an inch in diame-
Ter Is comparatively large in powerful micro- |
scope although one of 1900 of an inch ia scarce |
y visible to the unaided eye The tread of a |
ny, which requires delicate ear to detect. IA |
magnifed by the microphone to the tramp Of |
cavalry. The change Of temperature Of hess !
the most sensitive skin but the bolometer reg
listers on scale an increase or decrease of q
millionth Of degree and actually notes the rise
10 the temperature Of room when a match is
lighted mile away.
sss
Invar, the peculiar alloy of Dr. Guillaume, of
Germany, contains nickel and steel in certain
proportions. 1t is remarkable on account of its |
lack of expansion on being heated, and it may |
even be so made as to be slightly contracted by
heat. 1t is expected to prove of great value as
means Of avoiding the errors in instruments Of |
precision hitherto caused by expansion. Mea-
surfing apparatus, surveying apparatus and es-
pecially timepieces will depend upon it for i'm |
provement.
The novel burglar catcher Of an Indiana man,
intended for stores and other buildings unoccu-
pied at night, consists of steel tube closed at |
one end by cork and at the other by smaller |
tube Of gunpowder, and containing formalde-
hyde or other noxious vapor. When an electric |
circuit is closed by a step on mat or in other |
way. small wire is heated, firing the powder |
and releasing the formaldehyde.
sEa
A II
c., for classifying hair. represents % different
colors of human hair.