The Richmond Diatomaceous Earth. [caption title]
Priced list for microscopic slides of diatoms, fossilized single-celled aquatic plants, as prepared by Charles Lewis Peticolas (1829–1919) of Richmond.
Featured within is Peticolas’ account of his discovery of a new vein of Richmond Diatomaceous Earth, reprinted from the August 1878 issue of Cincinnati Medical News. “I secured a few pounds of the earth, and an examination showed it to be remarkably pure, and free from “Orthosira Marina,” the great abundance of which in other rich parts of the deposit, obscures the more interesting forms.”
“Slides by same process” are offered for sale from locales in Maryland, California, soundings in the Pacific Ocean and elsewhere. With newspaper testimonials and one from William Ashburner, former president of the San Francisco Microscopical Society.
Description: The Richmond Diatomaceous Earth. [caption title]
[Likely Richmond. 1876]. Single sheet, folded once to form , 2–3, [4 (blank)]pp., 8 x 5 inches. A few author’s ink corrections. Fine.