Henry C. Adams
Capitolo 22
evident when in the water and it is of considerable assistance
in to locate their position, especially when they is to some
you outdistance from the observer.
A craft of deep-sea drawn by the Mr. G. P. Attended for verifying
the set of the tides along the base of the ocean has
recently state used by the investigation of the Fishing of the Sea of the North
Committee. It consists of a bottle moulded as a bottle of firm carbonate-water,
fact of strong glass to withstand the pressure of the water, and
partly he/she filled with water, so that enough air has gone away only
in him to cause to be him/it floating. A length of bad of copper thread enough
to provoke to sink him/it is tied up then to the bottle that is then
allowed to fall in the sea to a defined place. When the end of the thread
the fund that the bottle is assuaged of some of its weight touches
and it travels together with the tides a short distance above of the bed
of the sea. Approximately 20 for cent. of the bottles you/he/she was recovered, or
being thrown on on the beach or being fished above in nets they trawl.
[The illustration: the Fig tree. 8.--Detail Of Afloat Wood Of the tide 10 Feet
DEEP.]
A double craft, weighing that approximately 10 lbs, complete, you/he/she was used for the
observations of the tide for the Girdleness outfalls provide of sewers Aberdeen.
The portion of surface consisted of two sheet-iron cups braised
together, making a craft 9 in in diameter and 6 in deep. The
you lower or submerged portion was made of zinc, cylindrical in
plasmas, 16 in diameter and 16 in long, it pierced to intervals
with diameter of lin it punctures and suspended from he/she wants to say of a brass chain
from a formed revolving part on the inferior part of the craft of surface.
In gauging the tides the craft has put in the water to a
defined point and it allowed to go adrift, his/her course that is noticed and
later it transferred to a plan. The time to start owes
is recorded and observations of his/her position exact takings
regularly to every quarter of a hour, so that the taken time