Very good except the cover of No. 12 is split at the spine and detached. In a custom chemise and slipcase,. Printed wraps. 29.4×21 cm. French text. Scarce early issues of the scientific journal devoted to research in radioactivity, The editor was assistant to Pierre Curie. Articles and reviews by early researchers in the field of radioactivity. The second copy of No.1 is stamped “specimen” on the cover. While this series starts with No.1, in July 1904, there was in early 1904 a series intended to a more general popular audience. Heavy set, will require extra shipping. weight: 5.3 lb. Masson & Cie. Paris. 1904, 1905.