24 



OBITUAEY. 



Henry George Madan, M.A., 

 Fellow of Queen's College, Oxford. 



Died Dec. 22, 1901, aged 63. 



Although not a Fellow of this Society, Mr. Madan contributed 

 several valuable papers to our Journal. His researches on Dense 

 Mounting Media will be remembered by many Fellows ; but probably 

 few are aware that he was the first to point out the value of " Signal " 

 green glass as a screen for Microscope work. He was also the 

 designer of a polarising prism. Shortly after reading his last paper 

 he met with an accident, being crushed by a railway truck ; although 

 he made light of it, he really never got over the effects of this serious 

 accident. He was a genuine worker, and his genial companionship 

 will be missed by all who knew him. 



The following is a list of his papers published in our Journal : — 

 A Modification of Barker's Selenite Holder. (1883, p. 718.) 

 A Method of Isolating Elue Eays. (1885, p. 327.) 

 A Modification of Foucault's and Ahrens' Polarising Prism. 

 (1885, p. 328.) _ 



On some High Eefractive Organic Substances. (1898, p.. 273.) 

 On a Method of Increasing the Stability of Quinidine. (1901, 

 p. 246.) 



On the Spectrum of Piperine. (1901, p. 603.") 



