The sun. [volume] (New York [N.Y.]) 1833-1916, 1892-07-24

cocoon silks.,is an ash composed Of lime and
magnesia 1t is rare for other metals to bs
tin have been found. these probably derived
from the vessels employed IN reelnR. Tho
the silk. and the operation is said to be mate
rally assisted by treating the silk to bath Of
hydrocnloric acid before passing into the boil
1t is claimed to be possible to demonstrat
differences in the colors Of inks which cannot
be SEEM the one ink appearing light and tho
other dark. 1t is well understood the tints Of
the inks that are called black are either brown.
red. green. or blue in shade: such tones have
but little effect on the eye. as 1t is chiefly
sensitive to the yellow and red rays. But the
chief senstivencss OF Photographic plates. ON
the other hand lies In the blue. violet. and
ultraviolet. As with ord mary sensitive
plates. yellow and green subjects. are rem
it is Stated. viii II follow ISS in photoaraph.
ing inks Of various tones. 2 difference which
suitably colored light and color. sensitive
plates. In this manner naked differences in
TIE various i3ks r can De clearly and distinctly
photography to the detection OF the ialsiacs.
the W be- as
enlarged Photographic picture erasures and
alterations can be moro clearly seen than In
the original
Though cast-iron pipes are the best for
water under pressure. In longer or shorter
time they generally become incrusted. accord
ing to the quality Of the water. the deposit oon-
sisting. as is Familiarity understood. for the
greater part Of oxide Of iron and carbonate Of
lime. Thus. Of course a thorough cleansing
OF these pipes is one OF the most important
problems in engineering. three principal
methods being resorted to. namely. taking out
the pipes from time to time. heating them.
and scraping out the deposit that is loosened
by the heat: cleaning them with brushes and
Sowing solving the deposit with acid. 4ccordine to
methods has been used with most satisfactory
that nearly nils the tube being run back and
forth IN the pipe while In use and the muddy
of water. In the latter place. where the net
work of pines Is described as fourteen miles
nd the ms for
whole is stated to be within seventy eight
day when This method is pursued. For the
are provided with manholes.
Handwoveu tapestries are now reproduced
In such perfect manner as to mako . most
satisfactory substitute for the real and vastly
more expensive fabric. and constituting. In
fact. an industrial art OF positive Importance
As exhibited In the trade. for hangings in the
library. dining room. and other apartments.
the figure and floral pieces are in the rich low
tones and forms OF the best periods OF French
weaving. and. being In rolls OF both panels
justn"nt. In the carrying out Of this method.
the a,tstir, treatment Of tapestry paper has
panels OF tie iaGer n ra94 on cloth e dun
the, panels are bound with leather. studded
with gilt nails; the, wainscoting should be
high. and OF wood which harmonizes In colot
The town Of Waco. In Texas, claims the dis
tlnctton OF having tho largest we'll In the
United States. and with few rivals In tho
world. 1t is bored with diameter OF ten in
ches to the depth OF $50 feet. all the artesian
wells OF this town finding their supply at
about that depth. The Samson we'll. which
hns Ss m IL nG sdns 9W as sG% Sn
perfectly pure and Crystalline water, at ,a
a pressure Of sixty pounds to
The inch and i WI , rise ,rd in q, the stand
Tie supply, too. appears to be inexhsustible.
n a. dim',,uti19 Of Pressure haSing so fsr been
wo other standpipcs are. reportedLrespec-
lively eighty by twnrty feet aud eighty eight
WITH Sns no waF y s%pG s sna
ouf eu also sca for
Rith u motive power when can be applied TO
III klhus VI MISUNDERSTANDING HteuS.
pulley wheel Of proIisious size is now In
operation in the mill Of the Wlllimantic. Conn.
Man ufacturng Company. With the hub pieces
his wheel consists OF twenty"six parts. and 10
ast In twelve sections. each section carrying
spoke and segment Of the rim. which 10
a,ked In its casting hY rib work resem ulinga
,ot ed together by n series Of lSO 2h and 2t-
nch holts. The smokes weigh $4,000 pounds.
he rim !2Ouu pounds. and the weight OF the
haft, inclIdng the disks at either end. Ia
= 900 pounds. The total weight Of the pulley
5 10000 ourds. its diameter 2S feet II hasa
acc Of los inches. and the wheel makes sixty
evoluti0ns minute