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Transactions of the Society . 
so small as scarce to admit any light, or not sufficient light for a great 
magnifying power or opake objects. Now, by my Invention, as 
aforesaid, the object glasses of microscopes will admit being as large,, 
and the same as for telescopes as microscopes, composed as aforesaid, 
performs properly as telescopes, and visa versa, as no refractions 
whatever can disturb or distort an image once formed by my Inven- 
tion of a true centric dilating pantagraphycal paralelism. . . . For 
want of such knowledge of the properties and applications before 
mentioned ... all optical instruments have hitherto been very 
deficient. . . .For when a magnifying power was carried beyond a 
certain degree, as allowed by all opticians, notwithstanding the latest 
improvement of acromatic object glasses, they wanted light, field of 
view, and distinctness, which mathematicians know is contrary to- 
their own demonstrations of the law of optics, and which no one has 
ever been able to account for.” 
At the end of his specification Storer gives the following explana- 
tions of the various technical terms he has used : — “ Note, paralelism 
is probably a new technical term in optics . . . newly discovered 
by me, and don’t appear to be understood by mathematicians or 
opticians. By an optical paralelism, I mean an invisible image, 
formed by points of rays of light, from two or more reflections, and 
which points shall meet, unite, hut not pass other, but take a new 
direction in angles equal to each other, as the ray of incidents with 
the ray of reflection. By a dilating or panta graphical paralelism is 
meant two paralelisms so meeting as the points from each unite. B[y] 
a centric dilating pantagraphycal paralelism I mean three paralelisms 
so united and formed as to reciprocally assist each other under every 
change required of them, in which state the minutest points of the rays 
producing the image may be caused to accede to or recede from each 
other in a dilating form, ad infinitum, without disturbing the image 
or wanting light, a phenomenon in optics never before known, though 
upon which the distinctness of vision, great magnifying powers, a 
large field of view, and sufficiency of light, entirely depends.” 
The following is an account of another patent* by Storer, and is 
probably a continuation of the preceding specification. It is for a 
“ New and Peculiar Method of Preparing and Making of Optick Glasses, 
which I call’d by the Name Syllepsis Glasses, and also the Application 
thereof to Optick Instruments in general, particularly Tellescopes, 
Microscopes, Beading Glasses, Opera Glasses, and Spectacles, whereby 
Distinct Vision is more readily procured and the Sight greatly 
Believed, and by which said Preparation Optick Glasses are rendered 
more Perfect, and may be applied with greater certainty.” 
In describing his patent Prof. Storer says, “ all vision-making rays 
are transmitted through a syllepsis glass or optick glass in a straight 
line with the incident ray ; and as there are a sufficient supply of these 
* Specification No. 1407, dated December 12th, 1783, and April 10th, 1784. 
lieprinted in 1856. 
