John Clark to the public..
Clark, John,18th century.
[Edinburgh : s.n.,
1773.]
Caption title.
Edinburgh, January 1773.--at head of caption title.
John Clark (ca. 1725-ca. 1790) was an optical instrument maker, jeweller, and goldsmith whose shops were located in Edinburgh between 1749 and 1796.  "He was the second earliest Scottish microscope maker (John Finlayson was the first in 1743) and produced high-quality instruments that optically were much better than compound microscopes at the time.  Clark first offered microscopes, made in silver, for sale in 1749, subsequently modifying their design in 1754, and ultimately advertising a brass instrument in 1773. John Clark had at least three shops: one at James Gilliland's Jeweller, at the upper-end of the Luckenbooths (1749); one at Parliament Close (1751-1755); and one at Sir Isaac Newton's Head... (1773-1782)."--Catalogue of the The Golub Collection, University of California, Berkeley.
"Mr. Clark having, in general, given up the jewelry business, and intending to apply himself chiefly to optics, which he has made his particular study for some time past, makes no doubt, that this new attempt [to bring a] pocket microscope to perfection, will give the utmost satisfaction to such as please to favour him with their subscriptions. The price to subscribers will be four guineas; one guinea to be paid at subscribing, the remainder at the delivery of the microscope. The instrument may be seen at his shop, at Sir Isaac Newton's Head, a little above the Guard, North-side of the High-street."
ESTC
Microscopes
Scotland Edinburgh.