Fancy boards embossed on front and rear with crests of participating countries and a profile, Of Prince Albert ?; all edges marbled but very faded; all pages uniformly yellowed; occasional light foxing. Marbled end papers strengthened in the channels front and rear by matching strips. 592 pages; b&w lithographic illustrations throughout the text and some un-numbered full page plates; at least 7 fold-out illustrations. A monumental work showing the state of the Science at the time. Please expect additional  postage. Covered in archival plastic.