On the Specific Refraction and Dispersion of Light By Alums

From the "Philosophical Magazine" for August, 1885. Paperback. Very Good -. Paperback. Original Wraps. Very Good Minus/No Jacket. Signed by Author. 12mo. Pamphlet in original peach color wrappers w/some light chipping and fading to edges. Lengthwise crease along center; signed by Gladstone on front wrapper. Interior is quite clean w/bright text. Contains several tables and charts. This paper was read before the Physical Society on June 27, 1885. Pages 162-168. In wraps. SCI/021104.