Signed by Author 1925, first edition, green Cloth Hardcover with Dustjacket, 328 pages 8 1/4" tall. DJ is poor, torn, price clipped and stained. Name on endpaper. Inside pages clean and binding is tight.Extended poetic opus on the advancement of science as exemplified by its personalities by the once, immensely popular traditionalist poet. Second in the trilogy, "The Torchbearers" which tells of the mighty pioneers of science who caught the fire of learning one from the other, bearing it down through the ages.