First Edition; a Very Good book in a Very Good dust jacket. From the library of noted evolutionary biologist Stephen Jay Gould. A handsome copy of this treatise on Evolution from one of the leading evolutionary scientists of the 20th century; this book scarce in the first printing, particularly with the original jacket. The book is in very good condition with a square, tight binding and pages free from markings; the book does show some light staining to the text block, some mild rubbing and bumping to the edges and corners, and some inconspicuous spotting to the boards; housed in a completely intact, original jacket that shows some age-darkening to the spine and edges with some alternate areas of sunning, and some light staining and soiling to the panels and spine. Overall, a very presentable and collectible copy with a unique association to Gould. Not remaindered, not price clipped, not ex-library; in a protective Mylar sleeve and will ship carefully wrapped in a sturdy box.