2 volume set published in 1863/5. Details of experiments and studies undertaken by the US Navy dept on the efficient use of steam power. Original red half calf with red cloth and gilt title, some scuffing to leather, xxxi/355 and cxii/502pp, Vol 1 with 17 plates and Vol 2 with 30 plates some pull-out, ex Institution of Naval Architects library London with their bookplate in each volume and a paper accession number on the spine of Vol 1. Very Heavy - UK postage £10.00