first edition Softcover
by Ayrton, W.E.; Mather, T.
First Edition. Softcover. 8vo., paged [442]-446;G-; buff cover with black printing, some rubbing with soiling along edges, small water stain and smudging on front, small tear upper left on front, bumped corners; interior has ink marking some paragraphs; "From the Philosophical Magazine for November 1896" 1291450. Rockville Non-Retail Listings. (Inventory #: 1291450)