CONTENTS 

 SECTION A. PART 2 



PAGE 



5. — The Multi-linear Quaternion Function. By Charles Jasper Joly, M. A., 

 D.Sc, F.T.C.D., Royal Astronomer of Ireland, and Andrews' Pro- 

 fessor of Astronomy in the University of Dublin, . . , 47 



6. — On Bicursal Cm-ves. By Rev„ William Ralph Westropp Roberts, 



M, A., Fellow of Trinity College, Dublin, 53 



Dublin : Printed at the TTniversity Press, by PONSONBY & GIBBS, 

 Printers to the Academy. 



