11 



II. " The Bending of Electric Waves round <i Conducting Obstacle." 

 By H. M. Macdonald, M.A., F.B.S. 



III. " On Skew Eefraction through a Lens; and on the Hollow Pencil 

 given by an Annulus of a very obliquely placed Lens." By 

 J. D. Everett, M.A., D.C.L., F.E.S. 



