Paper, 'On the effect of polish on the reflexion of light from the surface of Iceland spar' by C Spurge Spurge writes: 'The optical effect of polishing the surface of a transparent body has received the most complete investigation at the hands of [Thomas Johann] Seebeck, and till very recently Seebeck’s were almost the only experiments made on the subject. Seebeck’s method consisted in observing with a Nicol the light of a lamp reflected from the surface of the body.' Annotations in pencil and ink. Subject: Optics Received 18 November 1886. Read 16 December 1886. Revised 3 March 1887. Communicated by Richard Tetley Glazebrook. A version of this paper was published in volume 42 of the Proceedings of the Royal Society as 'On the effect of polish on the reflexion of light from the surface of Iceland spar'. 1886