TY  - GEN
AU  - Martin, Benjamin,
CY  - London :
DA  - [1774?]
ID  - 667881
KW  - Iceland spar
KW  - Telescopes
LK  - https://univsouthin.idm.oclc.org/login?url=http://find.gale.com/ecco/infomark.do?contentSet=ECCOArticles&docType=ECCOArticles&bookId=1378400200&type=getFullCitation&tabID=T001&prodId=ECCO&docLevel=TEXT_GRAPHICS&version=1.0&source=library&userGroupName=usi
N1  - The second section, with separate titlepage, pagination and register, is 'Essay II. on the nature and wonderful properties of island crystal. ...', with same imprint.
N1  - Both essays could be had separately, the first essay without titlepage.
N1  - Date of publication based on date of advertisement at the end: Just published, The description and use of an opake solare microscope. ... London: printed for the author, No. 171, in Fleet-Street, 1774.
N1  - Price on title page: Price 1s. 6d.
N1  - Reproduction of original from Library of Congress.
PB  - Printed for, and sold by the author, at No. 171, in Fleet-Street,
PP  - London :
PY  - [1774?]
T1  - Two essays on the nature and wonderful properties of Island Crystal.Essay I. Containing, all that has been hitherto delivered in regard to its form, dimensions, and double refraction of light; with the addition of several new experiments with polished parallelopipeds and prisms made of this substance, which discover a various, multiple, and colorific refraction; and exhibit a variety of images of one and the same object. To which is subjoined, a computation of the magnifying power of reflecting telescopes; and a table thereof, from 6 inches to 12 feet in length. The whole illustrated with copper plate figures. By Benjamin Martin.
TI  - Two essays on the nature and wonderful properties of Island Crystal.Essay I. Containing, all that has been hitherto delivered in regard to its form, dimensions, and double refraction of light; with the addition of several new experiments with polished parallelopipeds and prisms made of this substance, which discover a various, multiple, and colorific refraction; and exhibit a variety of images of one and the same object. To which is subjoined, a computation of the magnifying power of reflecting telescopes; and a table thereof, from 6 inches to 12 feet in length. The whole illustrated with copper plate figures. By Benjamin Martin.
UR  - https://univsouthin.idm.oclc.org/login?url=http://find.gale.com/ecco/infomark.do?contentSet=ECCOArticles&docType=ECCOArticles&bookId=1378400200&type=getFullCitation&tabID=T001&prodId=ECCO&docLevel=TEXT_GRAPHICS&version=1.0&source=library&userGroupName=usi
ER  -