= Lessons in Elementary Chemistry by Henry Enfield Roscoe
{c}
{tag=Work by Henry Enfield Roscoe}
{title2=inspected 1868 printing; first publication 1866}
Textbook by <Henry Enfield Roscoe>. The inspected 1868 printing, Lesson XV, printed pp. 131–133, describes the bone-ash and acid-phosphate route to <phosphorus>. Its printing date is retained, and its account is not identified with a pharmacopoeial formula or claimed to establish every detail of an 1866 official process.
https://darwin-online.org.uk/converted/pdf/1868_Roscoe_elementary_chemistry_A5727.pdf
The 1866 first publication is separately recorded in the publisher-facing edition record: https://books.google.com/books/about/Lessons_in_elementary_chemistry.html?id=8QcFAAAAQAAJ[Other editions lists the 1866 edition].
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