[iv], 448 pp. Frontispiece from a photograph; small illustrations in text. (8vo) original decorated tan cloth. Revised and Enlarged Edition.
Revisions from the 1885 first edition based on experiments carried out by the author in the intervening years.
Condition:
Spine a bit faded, light wear, bookplate; a few penciled markings within, notes on rear endpaper; very good.