The Pascagoula democrat-star., 1911-08-11

FAITH IS OPPRESSED N
fnO0fa DtIMe EMPLOYED


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~ ths nstmnsi sYyefsmset ~ fepfs.
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~ Leeds. Eoslsbd. printed IN The
fslly Consulsf lleeufts W The sog'
eminent. h ~ thi4 eis@s, and u here.
with feprdDced IN falli
The Yorkshire flsef Ouse u used
fof wstef oavlsstlon ff The town ~
Y0fk IN this consular district Means
of keepios the cbsnoeI open have been
necessary since the earliest times ne
Gently On "efodef" VS. INTRODUCED and
Ia being used. Reference N this new
machine In the local press caused me
m address q letter " inquiry ~ Alfred
Greer, engineer Tor the Ouse and Foss
naslsstions at YORK. ~ ~ the nature
NJ this machine His reply covers
fully the local conditions existing and
describes this new method, 80 u IL
quoted quite fully. lie says, inter
ALA.
The river Ouse is like many rivers
In this country, dependent on the
tidal How for It's commercial useful.
ness; owing to the distance OF York
from the sea we are, perhaps, more
dependent. and on this account a
clear, open, and unobstructed channel
ls essential to the trade OF the city.
The natural erosion OF the land dur
Ing past ages by frost and rain has re.
suited In immense quantities Of ma
terial being carried down from the
upper part Of the watershed. From a
few miles above York down to the
Humber the fall Of the river bed Is
very slight, but, owing to the moderate
width Of the channel the velocity has
been sufficient to carry the eroded
matter as far as the river Humber.
BANKS AND SHOALS.
At the point OF discharge Of the
river Ouse into the Humber the river
Trent also discharges, but as their
direction of flow Is about at right
angles, this mbined volume does not
have the securing effect that would
obtain by proper training works that
would divert the combined discharge
into one channel and so scour out q
channel 10 the Humber. This latter
river where the Trent and Ouse dis
charge Is many times wider than
those rivers; the consequence Is thai
the velocity OF the current is at once
reduced aud the suspended materia
| locally known as warp) is deposited
, 10 the Humber bed, forming bank
, and shoals and resulting 10 the forma
, tion Of several channels In the plac'
Of one, and those are OF an unstabl,
character.
, II this warp remained 10 the Hum
Der or were gradually worked down t,
/ the sea by land floods we should no
, have much reason to complain. Un
fortunately the spring tides disturb
Z and agItate those banks and shoal
and carry up the Ouse and Tren
/ larger quantities than half doze
= land floods would carry down. Dul
' log the slack water-that is, ab0u
' the turn Of the tide-this warp is de
!. posted 10 the river bed and accumu
. lates each tide until It forms an OF
4 struction to navigation. This cor
/ tinues frequently during a Who'll
= summer and autumn and occasionall
! through the winter, unless we hav
D heavy rains upcountry and const
! quently good floods 10 the river, the
the accumulated deposit (from six
eight feet In depth 10 secured out an
. returned to the Humber, only to b.
I: again sent on its return journey Of
the cessation Of the floods. Hithert
4 we have used harrows drawn by tug
to disturb the warp on the bed (wher
/. II becomes very hard and solid by con
solidation) SO that the food will tn
more readily carry it away.
ERODER EXPERIMENTS.
The eroder has been brought int,
use for the purpose of disturbing tn,
warp lying on the river bed iurinI
land floods and during the ebb o
very high springs. 1t is quite al
experiment and after spasmodi
. working over period Of six month
| am not yet prepared to say that /
will do the necessary work OF disturb
ance as well as the harrows. Tn,
!. principle Of the eroder is admirabl,
!. and more scientific than narrowing
but we shall have to make alteration.
!, 10 the form Of applying the jets TO th,
: river bed.
The eroding vessel Is also tugboat
90 that when the condition Of th,
river is such thas no eroding is neces
sary or the absence OF floods makes II
useless for the warp to be disturbed
as In absence Of a fairly stiff curreu,
II would only settle again afterwsrd
lower down, we can use the vessel f0
ordinary towing purposes.
Nkxn -. ~.