Placitas, NM: Genetics Heritage Press, 1996. Hardcover. As. Facsimile Edition of 1902 Cambridge University Press Edition. xiv, , 212 pp. 8vo. Light wear and scuffing to covers, encased in custom mylar dust jacket. Ex-libary with library stamp on first free endpaper and across top of text block. Slight water stain at lower right corner of text block and front and rear pastedowns. Very Good.