New-York daily tribune., 1856-06-06
INDUSTRIAL INTELLIGENCE.

| ISpusrRiaL EDUcATIoS.-In no point are the most
modern improvements in educational measures in our
CITY, gratifying than in the tendency to the prac
teal ard tangible development of Mechanical talent.
Writing is mechanical operation requiring certain
training Of the muscles to execute, as well as cuti-
waited e5e 10 appreciate the system of gymnas,c
cses introduced by McLaurn in many Of our schools,
seems far better adapted to this end than anything
dreamed of few years since. The end accomplished
is not good writing alone but rspidty and its
execution patent has been secured by the inventor
w. S. McIsurin, for the idea of engraving very
coarse writing in the easiest flowing style, and allowing
the pupil to run these with dry pen until he has
"ihe hang Of it" when he may dip his pen and write
in the came of hand style. The ice thus broken, the
size of the copy is reduced, and subsequent practice
| in the same rapid manner makes penman and not
slow imitator of copies which all TO be abandoned
when the calls of business demands rapid scnbbling.
In several Of the schools also, and particularly in the
evening schools during the past Winter the study of
| drawing has been introduced with the most marked
| benefi-nOt fancy-pictures Of romantic cows aud
thatched cottages, but drsughts of buildings and
chiDery. We venture the assertion tha. study
yet presented TO the young of this city in the free
nght-schOOls is Well calculated both 10 attract and
improve as this Of industrial drawing; and, as The
Lessons given in at least of the schools
coupaned by scientific lectures on the subjects in IA
niliar language, the few hours there spent will, in
many cases, have marked influence on the future
career Of many good mechanic. Ordinary studies
may be pursued at home by purchasing the books,
but there il that about writing, and still abou.
drawing, which requires the assistance of
tutor Ii New York il the leader in the introduction
of this latter branch into her Common School system,
we hope her example may be extensively initiated.
PROTECTION AGAINST CoUsTERrEITISG Several of
the Pr fessors Of Yale College and the most learned
chen ists in country out in favor of Mr. Sero-
pysns method Of protection aganst the alteration of
bask DOtes. They affirm it to be, in their opinion,
successful also against copy ing either by photography
or by the anastatc process
In the plan proposed by Mr.. Seropysp, the paper,
before the printing tinted the whole surface by
Of an oil color, excepting that in ceran parts Of
each BILL five or more, the denomination is Indicated in
large letters or figures which left white like the
colored paper. After this comes the printing of the
engraved plate. To alter such BILL il is necessary to
cot pp precisely TO the general TINT the white letters
ard figures expressing the denomination, 80 son-
pletely to oblerate them and, at the same time no.
obscurs the engraving over them.
The rev plan prevents Photographic copying by
means of the peculiar color and nature of the ink and
also of the color of the paper and from the results of
trials with Seropyans bills which they have examined
as well as from known principles with regard to the
impoesibllty Of obtaining dsnctne-s in photograph
when the object copied has certain shades of color,
they believe that the method is complete protection.
In copying print by any anastatic process the ink
of the letters Of the engraved lines does not absorb
the corrosive liquid with which the paper is motened,
and upon this difference between the clean paper and
the ink lines, the possibility Of anas.atc copying de-
peIds. Now in the Seropyan mode of printing bills.
the general face of the BILL being covered With oil
ecla there is such distinction is here required
and whatever means may be used 70 remove the oil
will obiterate the printing. Hence the anastate
method cannot possibly be used in copying such bi,.
The LARGEST Mill l. THE WoRLD.-The largest
cotton mill in the world is the Pacific, at Lawrence,
Mass. The main mill is 200 feet long, IS feet wide,
and i, practically, including Easements and attcs, !
working stories in hight; the whole built Of brick, not
only substaItisly but elegantly. The print works
adjoining 1850 feet long and 80 feet wide,
being extt ndtd to form three sides Of hollow square
Surrounding the main mill and boiler house. Tee
boiler hou.e is 500 feet hong. The whole floor surface
Of this immense structure i. &c acres. The largest
mill in England is the Sal:are Works, lately con
structed BY Titus Salt the main building Of which is
surface Of which i II There noS in oper.
alton at the Pacific Mil in Lawrence 10000 cotton
sprdes ard 10 GOO worsted spindles; and these
be increased TO so 600 and 10000 respectively. There
are 500 looms in operation, to be increased 900.
These, with 1900 persons produce 100000 piece. o:
cloth per AM half dellines. The weekly con-
.un pton OF cotton is 20 900 pounds or 500 0Oo PER
sIuum eud ,oOe pounds Of wool Once mo-th
the 1900 persons assemble q. the cashiers office,
where lie pays out 70 them $50 900 10: wages sppTo-
priating 10 each the e1ac. amonnt she has earned
WEsrIRs RIVER NAyIG.rIoy.-lt is interesting to
observe the iDo ease not Only 10 number bu n size
Of the high pressure structures borne by of
the Mississippi and lis tributaries. report recently
published shows increase OF 20 per cent. 4 bo.s
and 30 ptr cent. in tunnage since the period one
year sgo. The whole nsmber COW N g es:nated
at 7.7 with al aggregate tunnsge OF 20 0Ol.
ASrSAER STOVE WIN. f. Hayes OF Geneva, thi.
State hss just patented stove for cooking and beat
ing sad irons withou, warming the room. The stove
is encased in sheet iron protecsr sc Il :, a. TIE
heat s drawn at once in the chimney.
French Can WHEEL The wheel adopted on ell
the French loss Of railroad is composed OF eorru.
gated steel dix bOund 10 steel tire, and sohd hub
pier,ed ior the sSe. Tbo. are stated ts be cheaper