The Louisiana cotton-boll. [volume] (Vermilionville [i.e. Lafayette], Attakapas, La.) 1872-1883, 1874-09-16

nal notes that the standing walnut trees
on a half section Of land on Eel river,
in Miami county, Indiana, were sold to
a lumber dealer for ST, 900. There is
a large amount of other timber on the
tract which is not included, onlythe wal
nut timber being sold. Walnut lumber
3 coming more and more into use
lbaRhout country and Europe,
and at present a very large business is
done in preparing and shipping it from
Indiana.
New GLAZING o POTTERY.-A kind
of lead glazing is used upon common
pottery, the employment Of which often
causes cases of lead poisoning among
the workmen. NJ. COnstantip, of Brest,
France, has recently devised q substi
tute, which is said to be much superior,
and to possess the hardness and inalter-
ability of glass. He uses s~ilicate Of
soda, pulverized quartz, chalk, and q
small proportion OF bOrax. This glaz-
ing may be cOlored green by copper,
and brown or violet by manganese. It
is already coming into use in many of
the largest French potteries.
PRIZE AwARD.-The Berlin Academy
Of Sciences vii award q prize of 5000
in July, 1876, to that student of science
who shall solve the following problem
most satisfactorily Steel when quickly
cooled after heating exhibits a change
of color and of the texture and density
of its material, besides becoming much
harder and more brittle. The causes
of these chanPes-whether they are
physical or chemical, or both ; what are
the comparative analsyses of the two
conditions, and what the relative guam
titles of carbon in those different con-
ditions of the metal-are the ques-
tions to be solved.
WATER-PRooFING LTNEN.-PrOf. Kuhr
gives the following directions for this
purpose Pass the linen first through q
bath Of n part Of sulphur of alumiua
in ten parts of water, then through q
soap-bath, Of which the soap is pre-
pared by boiling one part of Iight-coI-
ored resin and n Of crystallized car
Donate Of soda with ten parts of resin
until the resin is dissolved. The resin
soap bins formed is to be separated by
the addition Of one third of common
salt. In the seap-bath the resin-soap
Is dissolved, together with O~ne-part Of
soda-soap, by boiling it in thirty parts
OF water. From this bath pass the ar
tieles finally through water, then dry
and calender. Made-up articles NAV
be brushed with the solutions in success
sion and be rinsed in the rain. Wooden
vessels may be employed.
An INTERESTING DETERMINATIONS
workmen, while engaged in laying wa
ter pipes in Oividale, Italy, recently
encountered a large flat stone. On rails
Tag this q bed of mason work was re-
vealed, in which was placed a stone sar-
oophagus covered with q marble lid.
Within the receptacle were the remains
OF a human skeleton, some portions of
which were yet perfect. Beside the
body lay a sword, lance, helmet, spears,
o gold clasp and ring, O piece of very
beautiful gold tissue, and O flask of wa
Ter which was still remarkably clean.
The removal of clay from the bottom of
the grave brought out the letters Gisyl
from Which aICnSUUIUgIsIs nave DE-
Cided that the remains are those of Gil |
Bulf, duke of the Lombard marches of
Eriuli, who fell in battle in Gil, while
repeling an invasion of the Avars.
COATING CAST IRON WITH COpPER,-
The society of FORCES and foundries of
Val d'Osne has recently opened in Paris
an exposition of their curious products.
consisting Of objects of art in cast iron,
some of considerable volume, which are
covered with copper by the Gaudoin
process. This operation admits OF the
deposition of copper upon cast iron
without necessitating any previous coat
ing Of the latter. The difficulty of &C.
eomplishing this has been the securing
Of the iron; the baths of chemicals
hitherto used being incapable of thor
oughly cleansing the metal. Nj. eau
dom has found that very acid solutions
are necessary to remove the oxides of
iron which escape the securing but at
the same time the acids do not attack
the ~subiacent metal. Such o solution
acts continually on the points upon
which the copper ID not deposited. and
ends by dissolying the oxides and allow
ing the deposition to take place. A
large number of organic acids have
been found suitable for the purpose.
The oxalates of copper combined with
qu~adr1-oxalates Of soda are said to
give excellent results. An electric Il
rent is employed to secure the fixing of
q thick layer Of copper.