London: Published by Groombridge & Sons, Paternoster Row. 1868. 1st Printing. 44 pp. 8-1/4" x 5-3/8". Printed self-wrappers, stitched. Now housed in an archival mylar sleeve. General wear, with some soiling to outer leaves. A VG - VG+ copy. Item #49929
Uncommon work on the subject... at the time of cataloguing, we see no others in the trade, with OCLC recording only a handful of institutional copies, though surprisingly enough, none in the United States.