The Manchester journal. [volume] (Manchester, Vt.) 1861-current, 1873-07-03

with Acm suppose two cups made oat
g canay wcre Sled. one vita pgfc
water the other with water slightly
ssEaftd The 6rst, pure water, would
Dissolve Ia uu- portion q its re-
cigicat while she suEarcd water, tho
barely saturated, woali have little
power O. dissolve cot anything more.
Again. sofa water whether approach
ing aF uot a more natural element
breeds within Il more iafasou. In the
same way vegetable forms grow more
rapidly ia ii bat ihe most important
fact against son water for storage is
that it Is capable q dissolving
solid substances That sofi water will
act more readily on leadcn pipes than
hard water, is admitted by all experts )
bat they reassuro Us By saying that the
danger from poison by lead is almost
nothing from this reason that after
water has passed through Ieadon pipes
( q certain small portion Of lead may be
dissolved, but that, almost instantly, a
thin coating or veneer OF oxide and
carbonate OF lead is formed, glazing the
inside Of the lead. which renders any
further power power Of solution i'm
I possible Tho remedy, then, for those
who have new lead pipe laid--a con.
slant occurrence during the summer
would be 10 let the water run freely for
a certain definite tins before using it.
There is, however a novel fact 10 re-
gard to tho action even Of hard water
on loaden pipe, which is rarely noticed
and that is the solution of lead caused
\ by the ,stermHent action of tue water
/ by this is meant a supply Of water
which is kept in the pipes for while
aud then Withdrawn as for instance, q
reservoir Of water which would fill the
pipes for six hours and then would
cease passing water through them. the
pipes being half empty at certain times
If lead or iron pipe be filled with
" alter aud kept under good pressure.
the pipe will last for an indefinite time
if it be intermittent, in a certain giyeI
| period, comparatively short the pipe il
eaten away 1t must not be supposed
that this arises from mechanical sources
as of irregular pressure, for leader
pipe half filled with water, the watel
allowed to pass through without any
pressure, intermittent or otherwise
will speedily be eaten through. Tit
reason given is that the water is more
aerated. and that water with an excess
Of air in it has greater solvent proper
ties. To conclude this question Of the
solvent properties of water, experience
shows that aside from the question o
wholesome water, but having to d.
only with the economic portion of tn
question when the strength and lasting
powers Of the materials to be used u
store up water are brought into discus
sion, hard water is preferable, as sol
water can and does dissolve out th
stone, lime and cement, or metal use'
in The construction cf reservoirs mucI
more rapidly than does hard water.
The precautionary measures then t,
be adopted in regard to those VIII
during the summer from change of Il
cality may have TO drink water othe
than the Croton, are, if new lead pip
is laid, to let the water run for quite
long period, say the first time for 81
hours, before using it, and to see that
uniform steady pressure of water
kept on the leaden pipes all the time
Of course, those who in country house
use water drawn from springs or well
need use no precautions, and whethe
t the water be hard or soft it is equal
wholesome and palatable, the remark
! in this article only referring to waite
stored or carried through leaden pipes
t To make a bug bear of this subject
Q and to alarm the public in regard t
G metallic poisoning by water, is th
D furtherist possible from the intention {
\ the writer, who believes that IN til
e cases of the alleged poisoning froI
7 this source not one single case can b
authenticated in fifty thousand.