New-York tribune., 1882-03-05
ACTION OF ZOE UPON ROCKS.

In recent number of N0treR, Iir. Bergh
has drawn attention To the powerful agency
eXCrtcd 10y Ice IN >cycIlng rocks, OF winch he
giVeS a striking instance occurring on the Aalc-
sund i'm West Norway where a low ledge rising
out of the ford il all that remains OF once eN-
tcnsive tj%ld promOntory, when III the year
l7l7 was suddenly blown up and prcclpltated
into the water by the force OF tie ice within the
intcr,ticc, OF the stone. The winter bad been
mild, and during q rapid thaw considerable
stream had Wcllcd mp from the lcc-coVered
summit of the iTld, and carried It's waters mo
every cTcVicc of the rock, when sudden chahEc
of wind brought about sharp frost when
turned the descending waters OF the newly
formed stream into Ice, arIesting their course
within the lutcIstccs OF tie rock. ILe result
was the explosion o! The eutIc mass OF ne
fiHld below the outbreak OF the stream, ana ltS
projection from height OF more Than I.1VV
feet into the ncghborIug ford, which engnited
the whole of the pIomontoTy, with Its cu4u-
waited fields and tarm>teaG.
Simultaneously with the disappearance Of
the land below The surface OF the iloId huge
mass OF waters was propelled d-NH>' 'ht 4Ppo-
site shore carving with II rusty anchors, boat
raftcr,, and numerous other object, which had
LONG lain nj the bottom. The disturbance eN-
tended a mile beyond the point at which the
land was submerged, and the waters II rcucat-
lng carried with them wooden church which
had stood fifty feet above the ford, besides
sweeping away all the f-ilug-bOat> Tor DIS
tance of two and half miles. Before tins
occurrence, which was attended by loss OF lie
10 about score of persons, the hta0lahd had
been much TcsOrted 70 Oh account OF the hall
but. which aboundcd in the neighborhood, but
since that period the fish has never returned, a
Ggfef,' i 2lfe to tie covering up by tue intaien
rock of certain submarine cavities and springs
frcqueuted by the fish.
AN ENERGETIC PHOTOGRAPHER.
II. Van der Weydc of Rcstnt-St.. London,
rornutIy g9vc q successful dcmOn~traitn OF
nbotoyrapLv by means of the electric light be-
fore the London Society OF Arts. SIX years
aoo. Mr.. Van der Weyde took up the challenge
0f a de.poiriug London photographer 10 invent
o. method of taking good photographs without
daylight At hI,t he eudcJyored to condcnSe
rbe octiuic RAYS Of London daylight 10y means
of a ulauo. convex water lens six aud q hall icct
i'm diameter. The glass plates exploded under
the pressure OF the 9o1 pounds oi water, heaI4S
drowning him. while the wounds lALctcd 10y
the broken glass laid him up tor >lX weeks.
Having Reconstructed his lens with more
Difference 90 hydraulic science, he was moIuICu
IN find himself after all, on the wrong track.
He then began experimenting with the nnaEne-
stun and electric lights he used copper re-
nector lined with silver, and the largest ticc-
tric GohtlOu,c lens that could be made, reilcc-
for and lens being each four feet III diameter
lie then found that the question wa, not 10
discover n better artificial light, but to turn ana
twist its diyerging RAYS from point 80 a. 10
concentrate them-mahe them embrace lLHtcdu
Of strike the sitter. In continuing MS tAptIl-
mruts he sought to obtain, first. palaHt! ray :
from the parabChc reflector ana 'ueA |" 'o.-
dense them into convcTgng rays by the Moptnc
lpns The most important point IN ms ln[en-
tiou consist, Of Il small cOncaNc hiIIol' IouI
incLe. across placed close 10 tie llgAt 80 a. 70
i3de II from the sitter but no satisfactory ac-
couut has vet been gwen of the apparatus.