New-York tribune., 1873-07-03
APPLIED SCIENCE.

IMPROVED CARDTHG MACHYE.An important I'M
movement in cardiDg- machines has recently Deen
made IN England, by the substitution OF nSt io'
round wires. The former have greater resistance
when worked edgewise, and are consequently l'sS
liable to break OF become impaired; and, since they
reouire less and lighter grinding, they also last
Longer Their points being sharper and longer, also
render the cards more effective. The material ~
also worked better because the spaces between the
yCires on account Of their diminished thickness are
0reater and impurities collect m, and can readily
be removed from tnem.'
TrfE TO CUT CLOVER FOR HAY.-Opinions OK ag-
riculuriss being at variance ~ TO the proper uine
to cut clover for hay, Profs. Heiden ana Foigt IN
Situated series Of experiments to determine tniS
point. Equal portions of field were cut on the
9th nth and oath Of July. at the PERIODS rehpect-
lively of budding early blossom. AMI run pio'in'
The grass and resulting hay were carefully weigeu'
and analyses made Their conclusions were tndV
clover has less value provender when cut iate Oh
account of the dimnution Of the amount OF nutrl-
tions nitrogenous matter and the increase of celiu
loee or woody substance and that All actual IN
crease Of nutTiment in the crop from carry Dios9ih
10 full bloom does not take place They conclude
therefore, that il is best to cut clover IN early Dlos
SOM Furthermore, by reason of the weddings oil
old clover, the nutriment 1t contains canhot Dc as
readily extracted by the animal, 80 that IT ~ NOT
practically as valuable 40 its analysis WonId lndi-
cate.
SHIPMENT OF SALMON EGGS TO AUsraALIA.-In
January, 1873 large number Of salmon eggs were
shipped to New Zealand the sailing vessel Oberon,
for the purpose of stocking the rivers with tins use
ful food-sh The method adopted for their transpor-
tation consisted in placing them, few days after
they had been fertilized, in boxes packed in wet
moss alternating with layers of broken irs and
then arranging the boxes themselves in an ice
house, pling them up with largo blocks Of ice upon
them. In order to determine the merits OF THIS eX-
pertinent certain additional number OF boxes Oh
eggs were packed at the same time. IN the same
manner and placed in the ice-house of the Werlhn
Ice COMPANY in London. These were opened on
the 2d of May IO6 days after they had been slowed
away and the contents found tO be in satisfactory
condition, the pink color of the egg being preserves,
with very few exceptions and the eyes dlstlnctly
visible Two boxes had been kept in part ~ the
building where the temperature was Tatnef hlenef
than in the ice-hOuse. Nlne-tenths OF tlese "eIe
healthy and tho tails of the young salmon were
nearly visible
VALUE OF UNwAsHED WooL.-Since the introduc-
ton Of wOol-washing establishments has rendered 1t
possible not only to have wool washed. but also 70
sell unwashed wool and thus avoid the trouble, as
well as the danger to the health OF the animal Of the
washing previous to sbearing it has become OF i'm
portance In fixing the price of unwashed wool. TO
ascertain with exactneSs the actual loss by the wash
ing previous to the shearing II. GOedeck carefully
selected average animals from his flock of Negretti
and Rambouillet half bloods crossed and subjected
small portions Of wool clipped about the middle of
April to the usual process for washing sheep, with
the following results;