ix 



Page 



Formulae for sn 8m, cn 8u, dn 8u, in terms of sn u. By Ernest H. Glaisher, 



B.A., Trinity College, Cambridge 480 



On the Influence of Coal-dust in Colliery Explosions. No. III. By W. 

 Galloway (Plate 4) 490 



Index 497 



Obituary Notices : — 



Maxwell, James Clerk i 



Bigsby, Dr. John Jeremiah xvi 



Gould, John xvii 



Mallet, Bobert xix 



Stanley, Bev. Arthur Penrhyn xx 



Egerton, Sir Philip de Malpas Grey, Bart xxii 



Kolleston, Professor George xxiv 



