, 1873-06-01


T.,
1eys Of Switzerland Tor hardly any vauey
E1tnout one Or mora transverse barners OF Re
Innrougn the valley once tel a. cataract. Nea:
rohtreeina u tho Engadln, there Is such case
tne na!u 8neso pelng now Nofn a"ay 20 1oth
t!n9usn mnlen ne l1sor iaom n sne ne W1sLss
sh.a rusnes. lne oasl;er oi .e
1st ~ aso & tdse r. ~ goe ~ +s
a9o ot otes 149 oarIlee ~ poul;eu ~ H., e1ces.
a. .t 4ero ING ;a loia oG,nf dda5 4e
th;a Rast nssui'ep bat .a1;d Std'n !.
cles carried slonc hv the Tater. esch Of which
| az it struck the rock Clipped it away Ike the
particles Of the sand blast Thus. by solution
and mechanical erosion. the great chssna OF the
Fensteraarsch1uoht was formed. It is domon.
strable thst tha water which dowe at the bot-
toms OF such deep fissures once flowed at tbe
loyel Of what il now their edges. aud tumbled
down the lower faces Of the BARRIERS. Almost
every valley in Byitzer1and furnishes examples
OF this kind the unteuab1a hypothesis Of earth-
uuakes once 40 readily resorted to Ia accounting
for these gorees, being now for tho most mi
| abandoned. To produce The Canons of Western
America. no other cause ig needed than tho IN
| teeration of effects individually infinitesimaI
I And now ne como to Niagara. Soon after
| Europeans had taken posgenann of tha conntrv
| the conviction appears to have arisen that tEe
daen channel ~ tha r;uor N;.osrs ha1o1s - ~
! Falls had been e3cavated by tho cataract, In
h1r. Bakewen'a " Introduction to Geology" the
prevalence OF this belief has been referred to !:
it is expressed thus by Prof. Joseph Henry in
the Transactions OF the Albany Institute q In
viewing the position Of the Falls. and the fea- ~
lures Of the country round IL il innosaih}a NIT
to be impressed with the idea that tfis great nat
ural racewnY has been formed by the Continued
action OF the irresistible Niacara. and that the
Falls. beginning at Leviaton. Rnva in the corrac
Of ages worn back the rocky atratn tn tha;r nraa
ent site.n The Same view ia Advocated hrv dr.
Charles Lyell by Ir. Hail bv n Aoseaiz bv
Prof, Ramsey. indeed bv almost ali NJ fhosa ,who
haya insnocted tha 1,1aca ~ ~ "419oo ~"
o,,1ao+aa 80 -. ~.
- aaSso1 ~ u1aeo " tne oIlH!n anu progress
ror.1,r1,s x1n ~ 1aany oo.A!neu. MaxlnB
~ a;Sa - uoaa ~ tno sna9e o1 Nlagara fens oy
u5Sp ano oomparatively narrow gorge through
nt4ou W 1e. 1ae Nla6ara no"s. Inc ooundlng c4t1s
Iu - tnls Rolgs gre 11om Guy 70 5oo feet hgh. we
1eacn me Wnlrtpool, trend TO the northeast, and,
%aT eont k1, ~ resae o91 nereh e
~ 1s"a1 as aoout se7en m1ee IRON
ss,;e, ~ We 1oIe TO .4e oafe ae
.t y1,;1 - ~ 11@t 9e AAse pesn q1au.
Taet Ihae haio-1e " ;ao.oaau. n oon.1 Iunue9s OF
.r,., 20 - eompaia.l'elX tessl pain,
marks The end Of the precipitous as gorge ] Of the
d.c .no tt,e1 escapes 1fou. l.s steep
;.a 49, ~ 4 a'lu IN Mluenea peg Rulsues
~stors rs' W s'Ao A"A0 WILMA 1'4A1s 1eee1fes aso
"1re1s m
:, Ihe TACT that n historic times, even within
tne memory OF man, tne fa!t has senslbiy reced-
ed, prompts the question, How fnr has this re-
cesslon gomez At what point did the Ledge
W. winch thus continually ereeps Backwards begin
such researches the answer has been and will be,
At the preclpltous deolylty which crossed the
Niagara from Lewiston On tho American to
Queensto"n on the Canadian side. Over this
upper lakea once poured their waters, and here
the #ofk OF erosion began. The dam, moreover,