The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1885-1921, 1901-02-27

bors a practical test was made on the
last day of the century, which is de-
scribed in the following statement:
BOSTON, Dec. 81, 19oo.-We, the
undersigned, certify that we have
this day heard the submerged bell
(struck electrically from the expert
mental station on board the Sea BelD
through the electrical receiver Sub
merged from the deck of steamer
engaged for the purpose), at distances
of ~. l. and II miles in the open
sea At ~ miles the sound OF the
bell was heard very loud and very DIS
tinctly; at miles the sound was quite
as distinct and almost as loud as d.
10 miles; at miles the sound was
unite as distinct as at 11a miles and
almost as loud as at miles; at Il
miles the sound was heard at times
unite distinctly and at times somewhat
feebly Even at y miles the sound re
cefved was sufficient to give pfacti-
cable warning signal. The Dell was
also heard in the forehold or the
| steamer, without any receiving appa-
| rat1ls whatever at a distance OF one
! quarter of a mile so loud that 1t seem
| ed to be right alongside the snip, anu
! at a distance of IL miles 1t was hearo
| family but Enthusiastically, in the same
position in the hold and without any
! apparatus for detecting sound
The statement is signed among o1n-
ers bv Henry NJ Whitney, Commando
| Artbnr p Nazro. L. s. N; Prof. Wal
Lace c. Sabine of Harvard, Prof. WI
liam Y Allen. Prof Elisha Gray, Ar
! thur J. Mundy, Henry NJ. Soule, capt.
= Baker of the steamer II. f. D1mock
and A. P. Barlow, master L. >.
Mayfiower. On
The experimental boat, the Sea Ben
WIS huilt last summer by the invent
of pn1
to make practical test or lnei
/ theories. Very little has been know
> heretofore about the action OF SCUM
waves in water, experiments III
coustics having been made prlncipsali
: in the atmosphere. Before pullulli
o the Sea Bell the inventors mace MAJ
avnariments with sound in the waite
J. using as sound producers - nh
i water whistles and other devices. ne ie
e fnal1y selected d bell as the pest II
8, strumentality for prodo aaa pau u
sound Accordingly the Sea Ben
II confirmed with an 800-pound bell, sue
/ as is used for fog signalling IN the d
lie mosphere The current for supplyli
l. the necessary power comes o I,l,,
Sc small dynamo orisen The hell
to mower gasoline engine ne oett
al lowered through a we'll hole direct
M - tho center of the boat until 1t
To twenty feet below the surface OF
no | saa nv an ingenious mechanism
of may be rung continuously JUST as
church bell is tolled, or 1t may De ma
Nv to ring any desired number or nul
& hers at the will of the operator VINO
or thereby enabled TO send inteli,si
Je messages. each letter OF the aipna'
70 being represented by number II
tn obvious that instead of suspendlng
ii baIl from a boat it may be suspend
.ar from q, buoy. and anchored under '
tn TER of any depth at any distance
nv low the surface. In such case
,as current for operating the clap
~. youId be brought to the bell from
ed shore by means of a submarine ca'
for This much for the TRANSMITTING ;
10 ton which produces the sound.
of problem of picking up the souna u
;cb produced from the depths OF the
;tb is another story. The inventors HI
the devised a great variety OF recelV
,a onerating pneumatically and e
rs trically and mechanically, and h
M carefully tested their relative Ell
To- encv The simplest way to receive
.es- sound on board ship is to go below
to tho hold of the vessel as close to
COS keel as possible. without any ap
80 ratus whatever, and listen. At
AZ lance of mile or more the soun6
10. the bell may be distinctly heard