12mi - 18.5 x 12 cm.; xv - 137 pp. Blue cloth with raised blue lettering on a faded gilt spine panel, blind stamped lettering on the front board. First published in 1927, this is the second edition with minor textual changes and the addition of a short update chapter "Developments in the Last Five Years". Foreword by Clifford G. Grulee. Library markings are a white accession number on the lower spine, attachment stains and a small remain on the front free end paper and the library seal blind stamped on the leaf comprising pages 39 and 40. Otherwise clean with a good binding. Minor wear to the boards' fore corners, moderate wear to the spine tips and more so on the spine tail.; Ex-Library