JB/106/007/001

Click Here To Edit Nov 10 1793 Account of Experiments on on Conversation tubes*

Account of the Experiments on which he thinksas have been made for
for the purpose of ascertaining to what distance for conversation may be carried on
practicability carrying one
which the idea of making use of Paper for conversation
with secresy by means of through tubes of or the betweenby of the

and required
at any given distance, must at one of stations according
in a low voice through a tube, between two persons stationed at the respective ends.
In the distance has been grounded indicated

Experiments made At the distance of 366 feet a low voice atbelow the pitch of under the tone of
ordinary conversation was distinctly heard. The person whose voice
characteristic tone peculiar tone quality of the voice indicative characteristic
of the speaker was perfectly distinguishable.

The tube was composed of such lengths as were at hand viz:Base | Length Inch | Feet 0 3/4 | 108 1:0 | 222 1:3/4 | 36 Total | 366
* They might be called Telacoustic ([Greek text] from afar [Greek text] to hear) or crytacoustic ([Greek text] secretly) or Cryptaphonic ([Grrek text] to Speak). Speaking Trumpets, called Stentorophonic, require the voice to be raised, exclude secresy, and serve only for limited distances. Length 3/4 108 1 202 11/4 36 - 366 In this length were included three right angles (three rectangular
junctions) besides
a pretty sharp curved bend.
A very gentle tap, made at one
end with a pencil, was distinctly
heard at the other.

They might be called Telacoustic
from two Greek words
([Greek text] from afar, [Greek text] to hear)
or Cryptophonic [Greek text] secretly [Greek text]
They are to be distinguished from the
Speaking Trumpets called Stantorophonic (to speak)
tubes, which require the voice
to be raised, exclude secresy, and serve only
for limted distances

Identifier: | JB/106/007/001"JB/" can not be assigned to a declared number type with value 106.
Date_1		Marginal Summary Numbering
Box	106	Main Headings
Folio number	007	Info in main headings field	experiments on conversation
Image	001	Titles
Category	copy/fair copy sheet	Number of Pages	3
Recto/Verso	recto	Page Numbering
Penner	sir samuel bentham	Watermarks
Marginals		Paper Producer
Corrections		Paper Produced in Year
Notes public		ID Number	34595
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