Nevada County picayune., 1890-03-19
SCIENCE AND INDUSTRY.

The opinions Of nine of the largest
mill owners in this country are uniform
n stating that the finest grains Of -four
are made BIZ the use of millstones IN
preference to rollers
Honey farming in Germany yields
net income Of 1900. 600 marks (al,out
four and quarter million dollarsl, and
it is so important an industry that the
government affords it the protection OF
special laws.
Prof lie Comte. of ChardOnnet,
France. has succeeded in producing ar
tificial silk which, in strength, beauty
and usefulness can scarcely be distln-
guished by the most expert handlers OF
this material from the manufactures OF
the silk-worm product
Prof Wiley gives the values Of the
chief cereals in the order Of their nutri-
tive qualities as follows: First, wheat;
second sorghum; third, maize; fourth.
unhulled oats. Sorghum-seed furnishes
a -four like buckwheat that makes pass
able bread. and is coming into consider
able use.
The big find of uranium in Cornwall,
in England. and the prospect of great
ly reduced price for that formerly con-
sidered rare metal, Is likely to lead TO
its employment as a substitute for gold
in many ways. With copper and plati-
mum, alloys are made with it that rival
gold in beauty; indeed, where the latter
is used with it it Will successfully resist
the action OF acid.
An expert pianist has been timed 10
discover that he could play 1886 notes
in four minutes and three seconds-or
twenty-four notes Involving seventy
two movements per second. Comment
ing on these observation Science says:
such estimates show, too. that we are
capable of doing many things al once.
The mind is not a unit, but IS composed Of
higher and lower centers, the available
fund of attention being distributabls
among them
1t has been proven by trial that
cement mortar which has been mixed
with large excess of water sets less
quickly than mortar mixed with the
usual quantity of water, but that IN a
few months the hardness Of the two
becomes about equal. On the other
hand, mortar mixed with very little
water sets quickly. but al the end Of
two years is only about half as hard as
ordinary mortar.
4 recent assertion that water color
paintings are affected injuriously by
constant proximity to electric lights,
the more delicate pigments fading in
consequence, does not seem 70 be borne
out by the facts. rs a disintegrating
force, daylight IS known to be far more
powerful than electric light Of equal IN
ten>itY The latter too, a. Is well
known. is a less active agent than day
light TO Photographic paper.-Scientifc
American.
In summer the storms generally
move from the mountains towards orr
to and across the Mississippi river or
valley on the first and second days,
and from about the Mississippi river &c
the east or more southeast the second or
third days. In the summer months
these storms generally cross the Mis-
sissippi river further north Tor bovond
the Canadian line, and during the
winter months they generally cross the
river further to the south; in spring
and autumn they cross this stream more
about its midway or more northerly.
A great number OF our storms move
over the lakes and pass down the St
/ Lawrence river and valley.