New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1866-06-09

popular Grove battery Dr. Hi fat plates located one
above the other With partition between Inc copper pss
The no is nearly filed with supbae and allowed %
become quiet The saphatc OF Is then gently INTO
the cup dssov The result the familiar bus
solution, lies toleraby distinct stratum AZ the bottom
Care taken introduce much OF the copper
suhae gate up TO tie zinc plate as IN such case
local action vii result and the copper VIII be deposited on
the zinc, causing considerable mischief To prevent the
chance Of tbs the plates placed considerable distance
apart when increases the resistance Of the battery
The speaker had tested this in his practice mann.
fac aud herup OF such apparatus. and commended
highly BE had found this battery less efficient cup for CUP
than the Grove. but the result greater economy He
estimated 100 Of these cups equal 70 40 II the Grove but the
cost Of maintenance Of the whole was only about ouehn
The consumption Of materials only oneha great By
the very economical battery known Chesters or the Chronic
smees battery was very efficient in deposne metals for
electro metuca purposes but too Irregular and too
fiery TO be recommended FOR teesTaphng was Yey Iss
used for that
In practice tcsrnphing was very much affected by The
state OF the weather In good weather 100 cups OF me
battery above described operated eight aeeennS eighs
wircs-in tho Uns States Comnany's Office, while In bad
weather it will work but two properly
Mr. Stetson the Secretary said tbat imperfect insulation
ee,eo NE e,leLey Of leesI Phc commandment" ps!
good forms OF nuars initiated strongly against their sue.
cess IN wet weather particularly IN ga' T.sa Every sp.
ders web extending between tie wires ana the nelsDo,n
conducting surfaces serves efficient conductor TO eaa
away the current There loss every telegraph pole
Dr. Bradley said that De La Rive bad suggested that the
tangent the angle Of DETECTION Of The magnetic needle ex,
posed the the gvanometer might be consdereA
as experimenting TO me true measure on 80
Doctor believed that this was an ALSO uty exact eas
These forces acted against other precisely as opposing
well gifts fixed wheel at the two exrenLes OF quadrant
DP Rowe exhibited very perfect catoh or balance valve
for use IN steam The Introduction OF cuon valve
steamppe considerable distance from the engine
had been found produce good effect II placed very
close directly the valve t useful very greAs
progress had been In this direction also fr iach
ang Of large sdeyaes within tue last iev
years. - .., - .
Mr. Hydo exhibited ingenious hammer, operated by
crank 10 be used for striking drills in inclined or horz nta
position in drilling rock II particularly useful in tunnels
where drills were introduced ncung upward The machine
would operate weighing % pounds with ease Men
strike directly with sedges either perpendicular down o.
slightly inclined but lis Instrument greatly reduces inc aoer
in striking upward There is eccentric gearing which draws
the hammer Backward slowly but strikes IL qncsy forward
The well known Geoogst Dr. Stevens invited attention 70
the pecnares Of the mammoth gues cnons prosiced
bv the rivers west Rocky Mountains Our nelghOor the
Nagara had gully 80 eet deep The ONO GEAR
WelsVlc, had similarly washed the esTt- away 70 lepn
700 feet original formation. But the Black CSnon
where the Colorado through the Black Mountains runs
distance through elevated pateau tae
general elevation of which mile above It's surface Az
point absolutely pependicusr precipce ascer.
tanned barometc measurement 10 be one nile IN
hight At point surface 90 feet above the river
dis remarks also the peculiar Stoppes OF onee
In the formation OF Of New YORK measured on ns
meridian Casss the valley oi toe hions"s
70 tic Adj ToAdack. illustrated by large diagrams