Anmial Report of the Cotincil. xxxix 



colouring matters with which he has enriched Chemistry, and 

 in appreciation of the life-long services which he has rendered, 

 in particular, to the advancement of science in Manchester; 

 and 



The Wilde Premium for 1898 to Mr. John Butterworth, 

 F.R.M.S., for his memoir read before the Society on "Some 

 further investigation of fossil seeds of the genus Lagenostoma 

 (Williamson) from the lower coal measures, Oldham," in con- 

 tinuation of his researches in the structure of fossil plants of the 

 coal-measures. 



Professor Michael Foster, Sec.R.S., was appointed to deliver 

 the Wilde Lecture. 



The Council arranged that the Medals should be presented 

 and the Wilde Lecture delivered on Tuesday, March 29th, 

 1898- 



Professor Francesco Brioschi was the author of many highly 

 original investigations in Pure Mathematics and Analytical 

 Mechanics. He was associated with Hermitein the development 

 of the Theory of Invariants founded by Boole, Cayley, and 

 Sylvester, and made notable contributions to the Theory of Equa- 

 tions and to Solid Geometry. He held many important scientific 

 posts ; in addition to his official position as Director of the Milan 

 Polytechnic, he was editor of the Amiali di. Matematica; and the 

 great veneration in which he was held by his colleagues in Italy is 

 shewn by the fact that he was made President of the Accademia 

 dei Lincei in 1884, and thereafter regularly re-elected at the expi- 

 ration of each quadrennial period. He was a Senator of the 

 Kingdom of Italy, and at various times did work of a more or less 

 ofificial character in connection with the Budget, the organisation 

 of the railway system, and the Department of Public Instruction. 

 He died on December 13th, 1897, at the age (almost) of 73 

 years. He had been an honorary member of our Society since 1892. 



A highly appreciative account of his scientific labours 

 appeared in the Comptes Rendits for December 27, 1897, from 

 the pen of his friend and collaborateur, Hermite. H. L. 



