Published anonymously. Generally attributed to Odadiah Walker; sometimes also attributed to Abraham Woodhead (R.H.), and Robert Cooper. Cf. BM and DNB.
Signatures: 2 leaves unsigned, A-F⁴ (F⁴, blank, wanting)
A series of optical experiments made employing various glass lenses.
Spine and cover photographed in July 2008 (Filename Rakow_1000058105_binding_CMYK-apd.tif)
Prologue photographed in July 2008 (Filename Rakow_1000058105_prologue_CMYK-apd.tif)
P. 1 photographed in July 2008 (Filename Rakow_1000058105_p1_CMYK-apd.tif)
Title page photographed in July 2008 to be published in the Gather (Filename Rakow_1000058105_titlepage_CMYK-apd.tif)
Digitized by Boston Photo Imaging in September 2009.