New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1877-07-14
SCIENCE FOR THE PEOPLE.


During the summer heats nothing is more
essential to health than pure water well informed
writer ia The EaGs Mechanic gives the following timely
points for judging Of the value Gers:u) Extraction
OF organic imqrritvTc first standard Of excellence by
which the value Of otter should be judged is It's power
(m0re or les Of removing ox1ising organic putres-
cent matter IN wafer T0s IS The most valuable proper
Is her possess the presence Of This matter has
more or Influence upon the general health. 2l Me-
chaucal ftTatiou.The facility with which ner VIII
remove absolute dirt. floating matter, or color from
water. without easily choking up strict compliance
with the first condition NAV be ueutralised 10y failure
In this 81 Easily cleaned and rechareed-Ihe facility
with which the ftering material may be got at, either TO
clean or renew IT, rs the very best material becomes IN
time saturated with the impurities held back or other
wise loses IT'S purifying power a. Simplicity OF con-
sctiou.If ttr is at all complicated in arrangement
il sure fail later and the difficulty in set
ting II right viii depend upon the extent o. Its eomrhca-
tons (l No trouble in uSng-Its working should re-
qmrc little or no attention. when such attention IS
rcaulgcd tits almost certain to be occasionally forgotten
neglected o. The itering material must not as
solve decay I'm the water.-Fr1m this cause an ad-
tona faint often acquired by the water as in the case
OF sponge resin. iron, etc. beng used ) the speed OF
filtration should be within control.-A most essential
point ga q very impure water requires slower filtration
than pure. almost any water may be purified
The wafer should be filtered drawD-IEis arrange
ment does away with the nspidty of 1atness 40 often
complained IN standing after filtration, and IS
merely question Of more or less purifying material
o. Al filtration should be upwards-By the ascending
principle advantage taken OF The natural tendency OF
Impurities, from tier greater specific gravity than Wa
tcE 10 settle Of iEemsly as very snEu' ooS,ac i
VII arrest impurities IN their upward course S teiF
tendency is always dOwnwaris IN downward filtration
The telGencE Is si"ys !" cary I9G IN a, ,gotio ton
it Is Away To leave them behind.
After glyccmc has been impressed into the
L. - Ia, st1,-. t,~tIl
have begun attract the attention o. the war aGthor
order Of the French Minister OF Marine stipU-
stcs that all the ropework in the french navy must
contain at Oue-third Hetl,fbrc. or course the
Germans have looked upon this advance in military and
naval science with jealousy and have ne intention OF
forming exhibition i'm Berlin and Frankfort oi tho pro-
ducts procured from the net'e such as yarn fore low
cultivation OF the plant ON a large scale
A correspondent of The Engineering and
Mining Journal declares Che sUtro Tunnel second to
enterprise te West lie says lis mouth rs IN the
valley OF the Carson River, stream which washes the
Eastern base the Washoe Range in which Tie Com
stock lies has been driven total distance of 1900
feet mp date ard is making progress ut the rate Of 800
foet per month. Not than $500 feet uOw inter-
venes between tie breast and tic nearest mine on the
ComstOck the Savage that if the present rate of pro
erosion De maintained, about 10 months moro will
suffice to complete connection. The lode VIII lee cut
al depth of about 500 feet pcpeudicularly below tho
surface ard very nearly the center. measuring by the
extent of the surface workings II is then proposed,
either h. the Company or by combination OF own
ers along tho vcn drift north and south through
each claim until tie ends Of the veins lateray are
reached This viii connect every mine on The vein with
the tunnel: VIII drain the entire workings and should
these lateral drifts he put under one management aud
made a highway, viii afford the means OF work
ing the entire vein through opening II eight
wears since work first begun al the town OF Satire on
the Carson River Tie expense II prosecuting The work
has scd about $1,000 per day, ard wien the Com
stock Is reached the total cost WIZ hnyJ amounted 10
about 5000 600. The tunnel Is dOn5le-trlcked, IS
cief jor drairaec Three air stats have been suuk
aous At the mouth OF the tinne' the Sutro
COMPANY have laid out town, have secured magnificent
GtI @ ~ he rc1oy,I OF mot II In mining
Carson"
As an illustration of the rapid growth Of the
Eveayqhs cloJes, Australian gum tree, it is said
that in the elevated parts Of Jamaica trees
ist about sixty feet Lie the trunks Of wnch
foot IN diameter near The grCunL These trees were
raised from INTRODUCED 10 tho island about six
proved that ia The lowlan. districts tie tree
Goes thrive tnus upsetug it. suitability FOR regions
IN which it was at time specially advocated.
Under the fostering care of the Govern
mcnt oyster culture iii France is becoming and
more productive A recent report by NJ. Bcuchon-
BFaudcy Minister Of Marine contains description
Of nearly thirty different localities embracing some hun
dreds ~ pagc~ or beds where the industry is carried
on One Of the most curious facts in the report is that at
Coeucs the oysters are actually trained to keep their
closed aud thus retain their freshness while being
carried 10 market. As regards the quantity Of oysters
which small pare viii produce the following statistics
may be quoted At Grand Camp there we're, at the time
ofM Bandclys visit, 100000 OF oysters ready to De
dclivere consumption. In 1873 the owner OF bed
at I0rient sold 100000 oysters 100000 Of which
were ready for nVtOn. In establishment a. Lc
Breneguy 44Oi 900 Grcdgcd oysters placed the
beds I'm 1876 OF the value Of 42jf anG in the
period 7.53S1 oysters were sold OGt OF the same
"parc, valued al 202,s0lf The difference between
these two cures represents to certain extent, the
spat sold jJr4 the tlme either 10 the establish
Ineu, the 20 Strangers. and resulting from
ccrLg Oi The tiles used Tor coiectlnS was 2Ol a.
800 representing value OF lO-So1f lAe growth al the
from the fact that IL 1873 There
were placed on beds Regneyllie $4,000 young b
valve measuring only three eentimctreS
III 1874 no lces than 60 900 these shcl-s
sold IN tlt ;uer1gs measuring 10 eight cCnu.ercs
in diainetcr The collectors Used for catching The spa
infant oysters have been greatly improved during the
last lew years
IL il said that in addition to the other eX
traordnary qualities Of o- cuca some prefer -
cal IN g. causes tmid people. who usually III nj case
IN society ana particularly before strangers 10 appear
10 good advantage under those Circumstances ia other
words, Il cures OasuiulEess
DR.. c.. T. Waters of Boston recently tested
before the meeting OF the Massachusetts Dental Society
anew remedy for burns and Scalds, consisting OF the ap
pIcaon 81 bcarbonate o. soda the simple cooking soda
used In az families. The doctor dipped sponge into
boiling hot water, and squeezed IT over his right wrist
tile water flowing almost completely around the arm