Edwardsville spectator. [volume] (Edwardsville, Ill.) 1819-1826, 1825-01-18


scription of locks and moles.
9Th, On the probable expense OF con-
nluiud,ng tho different routes
designated on the plat.
9Th. On the practicability of construc'
ton.
9th. Observations and remarks.
LIST The iaciinations Of The FLAMES
connecting The different POINTS on The
route, and the inclination Of the ftoaie
connecting The egrtreme POINTS.
In taking The observations to ascer'
points hereafter designated, the un.
dersigned have operated with all prae-
ticable care; and in all cases where
the distances between the level sta
ton and the SIGHT poles were not ex-
actiy or nearly equal; the necessary
corrections for curyeture and retrac-
ZION have been made, from which 1t
IS preaumahle that the results herein
snewn may be considered very nearly
approximatIng the ruth.
The object the undersigned had in
view in ascertaininE The respective Ie-
vels of the points p 5 | and L neted
on the plat, was to enable themselves
10 more satisfactorily investiga,e the
various routes that may be toraed by
connecting those poins, IN the - lelty,
and on either side 1t the Des Planes;
then from The knowledge they possess
OF he in erme date country, to 4uuse Of
their respective practiaablhlles, and pro-
babe expense OF consgru elton.
From the mouth 81 the Lutte Vu.mil-
lion, the point OF beginning, IL l.. dis
lance of SO oliles 6 chains, o8 inks,
and ms, "a chs. o3 be low tn . nt
where the rcuie placed an the fi-. oruss-
es the river Aux Sabies, there /. al as
cent OF sc ieel IL inches, 2.lO. Here
the main duff of the Illinois disappears,
having gradually settled dow 10 ne
level OF an extensive valley spreading
OUT to the north and east (in winch the
river Aux Sable and The NeJe C. els
have their ceurses) which Is supposed
to unite with similar valley, putting our
in southwestwardly direction, from the
valley Of Aux PLANES, near Cacne ISL
and.
From the point L, to the point |, near
Cache Island. is distance of 81 ms II
chs %, and has an ascent oil 81 IL. 3 in.
o. consequently the practicabllity o. an
interior route, connecting those Loints
is visibly manifest; but the quantity and
nature OF t"e eut.ing required 10 con-
meet them can be ascertained only by
careful examination and survey.
From the point /, at Cache Island to
the poinI b, at The ford of The Des
PLANES, distance oil Is ms Sc chs. 60,
here Is IAN ascent of Is II o in A., and
the canal on The northern size % The RE
yer may be so located as to avoid, in
some degree, the deep cuttings be,ween
these TWO points From ,he guul B,
al The ford of the Des PLANES. to The
point {, the sUmn,,t ievel oil he coun-
try between the d. PLANES and the
Chicago river, or Lake MIchiean. a dis.
tanCe a. ID chs 80, thef1 IS an ascent of
S !. 10. 6, - be point G. w have de-
nominated fbe summit lexe, Il M route
between the i"td at the Des PLANES and
Lake Michigan, bur II Is -. ideBt tina by
the ultimate location that must neresss-
rliy be gwen 10 the canal, the point G.
viii also be the summit level of the
route connec ing the two extreme points.
Then from { to A. al The head Of he
Chicago river, distance OF 7 ms 40
chs. Cd, there is a descent OF II jim. e.
From this concise detail 81 rs33 il
readily lows that the poin' L Is SIS L.
IL IN above the water ieyei V the
aoint OF beginning; that the poIn |. at
Cache island q l54 Il 8 in. above the
same poin'; -Pst tea point B, at the
ford, Is 1863 p 8 10. 4 sbeve TIE same
point; and II 3 n. 7 5bovs the po,ut
"A at The head o. ths Chca.o; lhat The
summit level { 5 1t. 81 9 abave the
point b. and II j.. IN. 6, ABOVE die
poin' A, or suriaee water level o. Lake
MicniGan; ina, the p9in, A, or SUI ace
"o'er ieVel Of Lake Michigan, IS 8 f.s
~ z above the point al Cache Is.apo
and finally that The surla t watsr ieyeI
OF Lake Michigan is I57 L. HIM
the surface water Level of the point.
where Ii is contemplated TO connect the
canal with the river Illinois.
Before dismissing the subieo, now I'M.
der consideration, the undersigned deem
1t expedient, for the more ready COM
prehension OF the vertical section thev
have presented of the traced route, to
call the attention Of the Commissioners
to the different scales used, fer withouta
constant attention to this point. the re.