JB/135/227/001

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1828 Sept. 21 2
Posology

Morphoscopic
23
Contrivance

2

Contrivance
In this case the contrivance consists in describing
two circles by means of the same rod, without any
change in situation of the whole

Of these two figures each is called an equilateral triangle:
equilateral from two Latin words the first of which
means equal, the other a side, meaning having all its
sides equal to one another: of which sides the number
you will see is three: a triangle, meaning a three cornered
figure: angulus in Latin meaning means a corner, and from
it is derived our English word angle: and as to the
number of these corners, you will see, it is the same as that
of the sides

Now then as to equality this you will see
can not but have place: for the lines are all every one of them
made by marks left all along by one and the same
rod Be the thing what it may, at no time
can it fail of being equal to itself. Thus then if the
equality in question, sameness in Latin identity
is at once the origin and the proof. And this sameness,
is the sameness of the instrument employed throughout
in the delineation of the figure

[+]

[+] S shewing how to
delineate an equilateral
triangle
Euclids Elements, in
which is the book
commonly referred to.
The proposition occupied in shewing how in what
this manner this object may be effected,
and thence demonstrating
that it is effected,
is the first of the
propositions contained
in that same book

In all every one of the customary English printed Editions of that work
there are several little things circumstances by all which together a
sort of confusion and perplexity, of which the Editor was
not and the teacher has possibly never been aware, is liable
to be produced in the mind of the learner

One is — that instead of a circle, the visible object exhibited
is a mere ring: the ring forming a sort of picture of the circumference
The misconception thus liable to be produced receives
a sort of confirmation from the measure in which the teacher proceeds
when he teaches the learner how to delineate or say describe a circle.

Identifier: | JB/135/227/001 "JB/" can not be assigned to a declared number type with value 135.
Date_1	1828-09-21	Marginal Summary Numbering
Box	135	Main Headings	posology
Folio number	227	Info in main headings field	posology
Image	001	Titles
Category	text sheet	Number of Pages	1
Recto/Verso	recto	Page Numbering	d2 / e2 / g25
Penner	jeremy bentham	Watermarks	b&m 1828
Marginals		Paper Producer	arthur moore; richard doane
Corrections		Paper Produced in Year	1828
Notes public		ID Number	46345
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