Pontypool: Hughes and Son, 1885. Printed for private circulation. 8vo., iv, 54 pp., 17 original composite photos, many of which are gate-folded and mounted on blank leaves at the rear; cracked between the title page and introduction but holding fimly. Opposite one of the photos are explanatory notes in holograph. Flexible cred cloth, titled in black; minor creasing at the tips. Bookplate, occasional pencil underlining. A good copy. Item #16400
An interesting piece of scientific investigation into the making of stronger iron products through spectral analysis.