Mower County transcript. [volume] (Lansing, Minn.) 1868-1915, 1874-01-01
Scientific.

"A NAIU6AA COA0S AOm V11HJUl<e9 u1S6
made it's appearance in the market. It
burns without smoke, and does not
give off either sulphurous odors or gas.
In steam-producing power it fully
equals anthracite.
BARTHELRMY has found that the nat
ural colloid surfaces of vegetables have
an admissive power thirteen to fifteen
times greater for carbonic acid than for
Ditrogen, and six or seven times that
Of oxygen.
s. j. LYMAN, of Montreal in lee
ture on the diffusion of odors, intro
duced two tame skunks to his audience.
They were only relieved from their fear
that practical experiments illustrating
the subject matter were to be insti-
tuted, by repeated assurances that the
sccretory glands of the animals had
been removed.
PRoF. HUXLEY, ~ Lord Rector of the
University of Aberdeen, proposes to
drop the study of botany and zoology
from the curriculum, and to make the
student pass whatever examinations
may be required in those studies, on
his entrance to the University. He
also desires to make the study Of Ger
man or French compulsory, replacing
Greek, which is to remain one OF the
optional subjects.
The application of electricity for the
reduction of metals from their ores
has been patented in England. By
regulating the electric current in q
proper manner it is claimed that cast
iron, wrought iron or steel can be p.o-
duced directly from tho furnace with
out ally intermediate operations. This
pudding by means of an electric cur
rent will occupy from ter to fifteen
minutes only, instead of several hours,
as in the ordinary pudding by hand
labor or machinery.
TIE "Scientific American" states
that the first patent issued in the Uni
ted States, of which there is any
record, was granted toSamuel Hopkins
on July 81, 1870, for making pot and
pearl ashes The second was to James
Stacey Sampson, on August 6, 1870,
for making candles; and the third and
last for the year 1870 was to Oliver
Evans, for making -four and meal. The
latter bears date of December 18, 1870.
In an investigation in Paris into the
deleterious properties of fresh paint,
saucers full of water were placed in
boxes freely painted. After the water
had evaporated from the plates there
were found some remarkable erystalli.
cations like needles, consisting of com
binations in which the oils employed
form the principal part. These crys.
| Aoll;,,a ~o,nhina iona vano ohka;ro<1
even when linseed was used. Rabbits
placed in the boxes became sick, but
none died.
IT is usually supposed that the solal
spectrum contains three different type,
Of forces in three different regions
Heat was supposed to be found at the
red end, light in the middle ant
actinism at The more refrangible end
This has been shown by DR.. Draper t.
have arisen partly from the use o
prismatic spectra, which condense tn
red end and dilate the violet, aud partl,
from the nature of our ordinary photo
graphic substances. He proved tha
the power of chemical decomposition
does not particularly belong to tn
violet end of the spectrum, but is foupt
throughout it's whole length. Bromid
and iudide of silver are more readil,
decomposed by certain rays than b.,
others. and hence the excess of actor
been at the violet end is junction o
certain silver compounds and not of tn,
spectrum Other substances, as car
sonic acid, show maxima elsewhere. a
IN the yellow region.