1870. No edition remarks. Unpaginated. No dust jacket. This is an ex-Library book. Black cloth with gilt lettering. Library copy, with expected inserts and inscriptions. Spine is mostly missing. Includes 33 plates of graphs. Pages are mildly tanned with visible foxing. Heavy cracking to hinges, with mildly loose front board. Mild scuffing and pencil inscription to front endpaper. Moderate thumb-marking present. Heavy foxing to plate 1. Notable droplet staining to text block edges. Boards have heavy edgewear with corner crushing and notable marking to boards. Heavy tanning to board edges and spine. Heavy loss and tearing to spine. Library sticker still present. Moderate water stains to boards. Ring mark to front board.