The New York herald., 1876-10-16
NEWTON'S CHANNEL.

COMPLETION OF THE SURVEY OF THs SITE OF
THE REEF-woRK ON FLOOD ROCK.
The survey of the river bottom at He'll Gate which
has been progress since the blast, completed
on Saturday. When the tide was food about noon,
small boat containing four put Off from the gov.
ernment works Two men rowed the boat, . third SAT
in the Sheets with note book ana pencil while the
fourth stood up the holding graduated
uring pole thirty feet long At tho moment tive
assistants OF Mr. William Preuss the civil engineer
the Works. took positions in front OF two theodoitcs
erected upon tho Shore and about 400 feet apart
About 200 feet from land the boat held stationary,
and the young with the note book blew whistle.
Instantly the in tho stern thrust his pole per.
pendcuary downward and the two engineers
looked through their instruments second whistle
that the pole rested upon the river bottom
and the engineers marked precise anglo which she
line from them to the pole formed with the imaginary
base line from which they working. This
carefully recorded the spot in order that when the
lines were projected upon paper the precise point At
which the sounding was taken would appear. Tho
young in the boat entered his note book the
depth OF water indicated by the pole Tho boat then
moved on TO another spot where the process was re-
peated IL was intended to have soundings taken at
intervals ten all the two three quarter
constituting ,hs site VI the demolished rcef but
IL found impossible OF the ssrong tide
and other to do this consequently OF
the soundngs were taken at points considerably closer
together than others Al two O'Clock the tide had be-
gun out pretty rapidly when the boat pulled
Prcuss and announced the survey completed
Mr. Preuss will at once proceed TO complete chart
from the soundings taken. From that he will make
calculation OF tho number OF cubic yards Of stone 10
be removed by drcdging IN order to obtain the re-
CURED dsp.n OF wa.er; ana ina, cs'ma.o o.ng paced
accordance with IT, advertise for proposals for the
work.
hof f~aA
below low water In any spot ono, the
shore point where the reel before the blast used
that IS probably but \ small heap OF stones, which
will easily be removed by dredging The Bridgeport
steamer Amercus on Saturday afternoon ran close In
shore over the Of the old Golfer dam.
Upon the chart Of Mr. Prsuss, which 10 well under
way; the figures showing tho depth o. water are
that the bottom Is composed Of sand mud, black in
dcating stone broken small, and red tof which htss
appears marking largo stones. The mud, Nj. Prouso
thinks, comes from the old coIer dam.
IS progressing finely though only small forco or
men are employed there AS ycI About thirty i've
at work In three gangs, which relieve ono
another each spending eight hours in the rock, SO
that the work goes without ceasing. night and day
Three drills are kept running-a Burlcgh, VIM
chester and small Rand-and zach drill Is supposed
10 borc ninety feet every twenty four hours The holes
In the floor OF the headings are drilled about three
inches in diameter while those In the walls
inch smaller The depth OF the holes from four
to ten icet The OF Flood Rock whilc benz part
OF the stratication the Halles Reef and yin6
TO the site of ~ OF nuCn s0fter nature
But eight ounces oil dynamite placed In the ordk
nary paper cartridges used and that quantity 10 lound
sufficient to tear AWAY great quantity OF the rock
as It 10 expcdient to shake down a. one time. On
Wednesday last large portion OF the roof OF the main
hoadng foil In, but fortunately nobody standing
beneath IT, Should the bo found To Increase in
sofncss the shaft sunk deeper and the headings
penetrate the body OF the rock, u Will seriously
hance tho difficulty OF the work, and render extreme
caution necessary AZ every blast
The broken stone 10 removed from the hoadinRs
is dumped upon the higher parts OF the rock 70 ex.
tend the area OF the little island now in OK
istcnce there, but which utterly insufficient
Tor working purposes. Tho drills and othor
implements are at present repaired at the
old blacksmith shop upon the Point but whom tho area
OF Flood Rock shall have been increased, that in com.
mon with all other necessary buildings will be estab-
lishcd upon II.
A large schooner which went ashore on tho rocb
weeks ago, lies there still serves as buoy
for the guidance OF navigators She was stripped oi
all her rigging week ago and has since been offered
Tor sac for the sum OF 50 cash wrockcrs who de-
clned the offer.
ferry VIII run from Hae,rs Point to tho works Al
Flood Rock, and no doubt tho place will bo greater
attraction TO siRhtscers than was tho mine nj the
former place. ~ tho present work will extent over =
rather UNDER IN area Of seven screA 4