Burlington weekly free press. [volume] (Burlington, Vt.) 1866-1928, 1869-02-26
SCIENTIFIC.


THE earth is found frozen IN a Colorado m.ne
~ ;he depth of l-5 feet, and the Ice which lies
between the strata Of the rock is as hard and
brittle as glass THIS is somewhat singular
B.. h.. -l.,-. s,e .Iir.i- tb,r coI si7 has 10 De-
r.Y-.r.l In
Az late meeting of the California Academy
ot Science, translucent agate containing drop
of water-a remarkably fine specimen-was ex-
hihitei lt was obtainel 10 dredging the Nalla-
me, River. and was brought up with the mud
from the bottom.
r... r-..l.s.14 .,.t. p-;,;-t N-,,,. b.. IN
vented mode Of steering ships by hyirostatc
press ure-the pressure Of the water IN which
the vessel floats. The apparatus j., Of course,
below the water line, and it can be controlled
from any part of the vessel The Captain, -it-
ting IN the cabin of the largest iron-clad, with
compass beside him, can steer her with his
thumb and finger.
a-l.
"A 80. '-.' ,:l. 80 i ,.s
'''u1.l-7 w. o''i',-'''
o4 uilA'n5 Z, wa ''.-i. ~ I... az t.
n.AIy 'H' l'l'. "a,
minimizing 1--we Dul srelly lneie.'s's ..-'
He'-' o.. " -'1 IN 'il' l1" f'''' '-i1
tissue of iriiio-platina wires the metal soon be-
come, heated. the fame disappears. and "a vivid
white light is the result 1t viii burn. it is said,
I'm q e-alr ofwiul i.hout protection. and down
f,Il Of rain viii not auench il.
4 stereo'y pln6 lnAcnlhe mas ueen lh'en'ei' lH
Whlch eacn 'ype Is maze suceess!'ely 10 'eNe us
intended impress upon plastic surface anu
when type metal Is poufel over 'hls surface
stereotype p'''e Is yo-'-nei. Inc Hi'u't power
required TO WorA this machine Is suppneu ny
eiectrciY oul 'ie Hanl oi tue operator mus,
determine winch ie''er successNey sv'e01eu
Ior 'nt "iii0l may ue u0Ne " P''S iNs
'4ornla!' al, II ls sa' proposes TO nAhGhc' 4
ture slih rom 'le orls'nai Neseu'o'e Hole oi 'he
mulberry uee; without WAlhs lCr ns SLOW
transihisson ,uiuusu 'ne leuiu'i o, s'iA iis'
Inc DARK Oh 'uc young stpiihgs Is ''Aen Ou' uls-
solIeu' anu az 01' tl'e ioie uisiu'' &C. s'9
Is theh reileu' Nts"eu' urleu anu 'oH,u't 'oi
mechAhlcd! sPHHits- me HpIou9 SIN 'luS
made Is silu 20 pe nne' so''' ABOUT nVe lhcnes ln
iength' Oh 1iI0Aess' gvou oolui anu 0o'-
slderauie ils.e' Inc process mas oeeh patent
ed, and Oallioshllhs are AZ WORK preparing TO 60
into 1t on large scale. IL Is as yer ohly m eA-
pertinent but is certainty most interesting
one.
N,rrIrrs PoNrIuus.-A specimen of this
rare rnollusk was recently exhibited to the Bos-
ton Society of Natural History by Prof. Bck-
more. with the statement, that contrary to the
G mmon belief that it floats upon the surface Of
tbe sea with sails set. AS pictured in school
books, the hVing animal never rises from tne
bed OF the ocean. me specimen was obtainei
by HIM at the spice lsiahds, and was the only
one seen during residence oi hye months, not
wlthstandmg that special search was made Tor
1t ny the natives Inc empty smell Is frequent
y found floating upon the surface, but the Nv
ing animal Is rarely seen, ana never SAILING with
Its feet expanded IN the ar TO catch the WIND.
The nromoters of the twin railway tunnel
scheme for nnit;ng the European continent with
the isIarJ If Greaf Britan ria the Stcaits of Do
yer. have emnlovel prof Henry Beckett. F. G.
S, to ascertain the Geological character of the
submarine ground REQUIRED to be trayersed. in
orIor 10 detormine its nrobahla ftness for the