Science Lyon Playfair autograph letter signed dated April 28th 1887 concerning the proofs of one of his scientific articles together with a few printed articles by him, such as 'Royal Institution of Great Britain' weekly evening meetings publications, dated 1853, 1856 and 1865 all in good condition, and 1841 publication with an article in 'Fat Acid', and a copy of 'A Century of Chemistry' with a missing cover, plus two picture prints (8) Note: Lyon Playfair 1818-1898 was a Scottish scientist and Liberal politician.