Burlington hawk-eye. [volume] (Burlington, Iowa) 1845-185?, 1850-02-07
New Discovers In Painting.

tended with some great evils, Of which
the Painters Collie is the chief. Il has,
therefore, been desideratum to find .
substitute. This appears TO have been
done bya very ingenious and valuable dis
covery made in France. The N. Y. Tri-
bnne has translated an article from the
French of Moiquot, which aiscloses this
very remarkable discovery, which is like
ly to make a revolution in the arr Of Housa
Painting. Mr. Leclaire, a house, painter,
was at work on the problem Of finding
substitute for white lead, Tor many years,
and at length has solved the problem.--
The following account Of it will be found
Interestingly ~ -
For several years Mr. Leclairs has
made exclusive and successful use of his
varions discoveries in colors and the dry
ing oil. The experience of every day,
made on the largest scale in more than six
thousand public and private establish
men,s-ihe Departments Of War, and Of
Public Works, the Bank Of France, the
Prefecture of Police, the Railroad Depots,
&C., demonstrate, or rather establish be-
yond question, the following facts: ,..
First. The new colors with their base
of zinc, manganese, &c., ar enot injurious
to the health of the workmcn employed in
their manufacture, the painters who use
them, or the occupants Of freshly painted
houses. In the establishment OF Mr. Ls,
claire, an average Of a dozen workmen
were formerly attacked with painters
collie yearly, and some, more unfortunate,
suffered five or six attacks Of this dread7
ful disease. Since the introduction Of
oxyd Of zinc, and the oil prepared with
manganese, not single workman has
been poisoned.
Second. The new colors are infinitely
more solid and durable than the old they
are not effected by sulphurous vapors
they preserve, everywhere and always.
their primitive tints, even in sulphurio
bath rooms and they have q property still
more precious, namely: When they ara
cleaned by simple washing, they retain
. their original brightness while the old
colors, when washed even with acidst
which diS<olres portion, remain dull and
spotted, and for the simple reason that ev-
cry thing which decomposes stains them.
Third. The white OF zinc is SO much
superior 10 the white Of lead, that when
the framing of panel is painted with the
best white lead and the centre with zinc
white, the contrast makes the framing
look yellow aud gray, and offensive tothe
eye. In such a comparison even the We.
netian white loses its purity. The white
lead appears to absorbthe light, while the
white OF zinc reflects it completely, and IS
brilliant and transparent.
Well! All the new colors invented BY
Mr. Leclaire, when compared with those
having their bases in lead or copper, pos,
sess pre-eminence as marked as the
wlii,e Of zinc does over that Of the white
of lead. They are at once richer, bright
er and fresher in tone. II is quite impos7
sible, with the white of lead and the oil
prepared with litharge, TO obtain the deli
cate and tender tints which the white Of
zinc and the oil prepared with manganese.
give with great facility and in infinite va
riety.
Fourth. fin important considerations;
BY the employment Of The new colors, q
great economy OF time and money Is OBJ
tanned. -- .aa :.
Experience has fully proved that If We
compare the quantity Of white OF lead
with the white of zinc, or the quantities
of oil necessary to prepare these two subs.
stances, the advantage Of at least 30 per
cent, is in favor Of the white Of zinc,
which covers better with equal weight. :
The application Of the white Of zinc is
a. easy and requires no particular care.
The white Of zinc dries in . shorter
time. -Jt 4
There, is, then, economy in the cost Of
the primary material; economy in the
quantity necessary TO produce given ef-.
feet, economy incalculable, in the durabil-
ty; and economy, no less remarkable, in
the quality Of being easily cleaned and.
restored TO original purity with fresh wa.
ter ... ms .s y
We have spoken freely and earnestly
on this subject bacause, first, il is guess
tion concerning one Of the largest and,
most important Branches of industry in
the civilized world and secondly, bril-.
liant scientific discovery successfully in
troduced by long years Of labor and con-.
slant sacrifice which were necessary to-
triumph over culpable indifference, blind
routine and opposition.
Franking Privilege Of Posimdsters.---
The following important letter Is in reply
to one from the editor of the New York
Mirror: .4--n-s.@. -,
Tosr OrFrcE DErAnrMgrf,
Appointment Office, Dec. 81 ,1S49, :,
SIR: The Postmastef General, after,
careful consideration Of the question ~ TO-