New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1877-02-03

feet; the acid 1t 10 said actliY AS harmless usn
fectant.
STUNT FOR WATERPHooFING FABRICs.-Possart OF
Tharanadt has patented tho waterproofing OF nnefy
woven fabrics of linen, cotton, &c, by means %
suint composition. He adapts his method 10
securing the suint to woolwashng establishments
Of small cost
TyRt,S-PuRPIe INK FOR MARKING LINEN-Von
Bele gives the following method for preparing an ink
for marking linen aud cotton Neutralise rs grains
of carbonate of ammonia with pure nitric acid, and
tritnrate ~ to 60 grains of csrnine with the
solution. Mordant the fabric with mixed solulio'
Of acetate of auulina and TN s% ana wri'e upon IT,
when ii Is perfectly dry. with the mk'
POTAToEs THAT WILL ENDURE THE WINTER
Teller at PasSy. Paris rs said to have prodh'ed
n variety of potatoes that will stand the Winter.
The Minister of Agriculture has recognized the DIS
covery and will aid him in further experiments
II the new article proves altogether satisfactory,
and adapted to cultivation on u large scale, u @hi
roa:oye the necessity Of considering the proper ti
for housing article at present rather sensitaVe W
cold
ARTIFICIAL LrArHFR.-ThOmsen has patented the
following process in England for manufacturing an
imitation of leather Heat a mixture of 1G parts OF
cline l6 of water, 4 of rape-seed oil, OF giyce-
rirc and Is OF boiled nsced oil, and force AIR
through it, to oxidize the llnseed OIL and expel The
water as far a. possible. Coat paper or hnsh WIN
In. air and finally iniuerse IL III solutloR OF taliiic
ned IL may De ornamested by iHercssing the eonl-
position with any design before 1t becomes dry
PREPARATION OF THRFsHiNG FL0oRs-Prof.
lehman suggests the following plan for the
preparation of threshmglG IN far less time and
of greater durability than those made with clay.
Stake half bushel of lime to dry powder and mix
il with half busrcl Of saEd, free from loan, and
eight bushels of sifted ashes of coal or tuIf and
with ate a a
five or six inches deep and smooth with a trOwe
The durability may he increased by coating II Win
ooal tar after 1t has become perfectly Dry
GUM RINGS TOR TIGHTENING TIE JOINTS OF GAS
rIrrs-Vichoff has described very favorable results
from using gum joints for gas pipes. On taking up
pipes that had lain in oIeraLy damp earth for eGht
years the gun rings found to be perfectly
elastic without any indications OF decomposition or
sfterrng and they adhered SO firmly to the iron
that n required considerable time Tor iour men 10
work the pipes apart, and IN some places thc gum
separated instead OF leaving the ron lhe intimate
combination Of the gum and iron IS assembled to
tho formation of suphide OF iron.
NEW oDE OF Using HoPs FOR BEER-Breithaupt
i, is sand has succeeded in preparing an essence OF
hons 10 drops OF which added to about 20 gallons
of beer after brewing are sufficient to impart fine
aroma entirely wanting in common beer because
the essence is not present III sulphured hops, OF
escapes in boiling the wort from unsulphured hops:
eSsenceh has been removed from hops they VIII Keep
without suphuring and can he employed as usual,
ITO less of them being required The essence VIII
Keen for years i'll heTmeteaiiy scaled vessels
LIMITATIONS OF STRAW. LEATHER, AND WICKE.-
woEE.-Imitations of straw Heather, wood, and
weker-work articles are produced by LJwenbeTg by
the following process: A mold OF the article to be
initiated Is made by pouring around it mass con-
siSting mainly of glycerlno and glne. Into tins,
4 obi al { OH oil
inc, oil or soap and some pigment, is poured and
before the whole of ii sets the larger part IS poured
out again. leaving but a comparatively thin hnI'
which constitutes the imitation when hrm. Anhe-
sion 10 the mold is prevented by treating it with
chronic acid or acetate OF iron.
DyNAMITg-Sobrero considers two operations in
the manufacture of dynamite exceedingly danger
ous; namely the mixing of the nitro-glycerine and
the infusorIal earth ard the pressing OF the mass
into molds TO form cartridges, MS in either case an
explosion may be produced by friction and pressure.
Nobel recommends far safer the formation OF
cart ridges from dOughy mixture of water and In
fnsorial earth and satuTatng these after they have
become perfectly dry with nitro-giycenne by I'M
Inerslng them in 1t and SObrero found that wlth
Italian infuscTal earth which formed very well inc
cartridges absorbed - per cent Of their weight 81
nitro-gyceTne. The absorption could be facIItated
by a vacuum.
SAwpUsT IN RoUGH CAsTING.-Siellr recommends
very highly the use OF sawiust in mortar superior
even to hair for the prevention Of cracking and
subsequent pceling of of rougb casting under the
action of storms and frost His own house, exposed
70 prolonged the seacoast, had patches of
mortar 10 be renewed each Spring, and after trying
without effect number of substances TO prevent 1t,
he found saWdust perfectly satisfactory. 1t was
first thoroughly dried aud slfted through an ordinary
grain sieve to remove the larger particles Inc
mortar was made by mixing part of cement, = OF
lime of sawdust, and of sharp sand, the saw
dust being first well mixed dry with The cement
and sand.
PUBLICATION or WooL AND WOODEN STUPF.-
The process patented some time ago, for the re-
moval of straw, burrs. &c, from wool by treatment
with sulphur,c acid, has been modified by Lisc as
follows: The stuff is worked for one to two hours
in bath consisting of about 26 gallons of supIurc
acid. OF 80 to g. one pound of alum, onehalt pound
OF salt and $50 grains OF borax II il then treated
In a centrifugal machine aud afterward subjected TO
Temperature Of 1922 to2iso. For removal of the
acid IT is first washed with pure water Tor hour,
then treated fer two hours with fuf's earth, soda,
and lime and finally washed for two hours with
fTesl water. As silphurlc acid Only can be elm
plOyed with uncui0red cloths such as nave becu
dyed with indigo chloride Of zinc and chloride OF
manganese diluted TO 81 are substituted with fab
RIGS otherwise dyed.
NEW DI-CovERY IN Misunderstanding to the
recent process OF Klenm of Stuttgart, the time re-
honrs, and that for an oxhide 10 212 days. but
more recent method, patented by MOntoison of Man
chester promises to accomplish the same in from
few hours TO one day. At trial made Of it before
exnerts. sheep was slaughtered and skinned aud
TIE WOOL was removed from Co. hide IN half an hour,
by .preadlng it with a chemical reagcnt, without the
IL 1