Patents connected ivith the Microscope. By W. II. Brown. 269 
ordinary magnifying powers ... for viewing minute pellucid 
objects. 
Fourth, Experiments on the Iphiauxetic Microscope , with equal 
magnifying powers ... for viewing minute opake objects. 
Fifth, Experiments on the Holomicroscopc ... for viewing 
small objects entire. ... It magnifies to a very great degree ; and 
exhibits at one view, the entire figures of small insects, &c . parts 
only of which, and upon a much smaller scale, can be viewed by any 
instrument at present known. 
Sixth, Experiments on a solar Microscope . . . particularly 
useful to Surgeons and Botanists, for viewing parts of human and 
other animals, plants, insects, &c. preferable for those purposes, in a 
surprising degree, to any known instrument whatsoever.” 
The major portion of Storer’s work is given up to a controversy 
which he appears to have had with Dollond about Telescopes. 
He also states that he was about to publish a work giving his new 
discoveries and improvements in Optics, but I have not as yet been 
able to find any clue to it and therefore cannot say whether it was 
ever published. From Prof. Storer’s account his apparatus must have 
been a truly wonderful invention, and it is a matter of regret that his 
name and work should have apparently sunk into oblivion. I trust 
that some day an example of his instrument may be found, when the 
various claims which he makes can be verified. 
Martin. 
I would now call your attention to a patent* granted in 1782 to 
Joshua Lover Martin, son of the celebrated Benjamin Martin, for his 
“ Newly-invented Art of Drawing Tubes, Plated or otherwise covered 
with Silver or Gold, on Copper or other Metal, for the Purpose and 
Construction of Telescopes, Perspectives, Opera Glasses, and various 
Optical, Mathematical, and Philosophical Instruments, to which they 
are adapted.” 
Martin’s description of his patent is as follows : — “ The copper or 
metals to be plated is first covered with silver or gold, and afterwards 
formed into tubes and soldered. They are then applied to the draw 
bench, and, being first put on a triblet or mandril, are drawn through 
the holes of different sizes according to the required thickness of the 
tubes. . . . And to prevent the surface of the plated metal tubes, in 
the necessary action of sliding, from being scratched or otherwise 
defaced . . . the collars or springs thro’ which the plated tubes are 
made to slide is lined with cloth, velvet, or other soft substance.” 
Blair. 
The two following specifications are extremely interesting, as repre- 
senting examples of the endeavours that were made about the end of the 
* No. 1316, dated 14th Jan., 28th March, and 4tli April, 1782. Reprinted in 1856. 
