24 
Royal Irish Academy. 
MoNDAr, I^'OVEMBEE 12, 1888. 
Eev. De. Hafghton, F.E.S., President, in the Chair. 
The Secretary read a Paper by Sir Eobert S. Ball, ll.d., f.e.s., 
''Eighth Memoir on the Theory of Screws, showing how Plane 
Geometry Illustrates General Problems in the Dynamics of a Rigid 
Body, with Three Degrees of Preedom." 
The Secretary read a Paper by Lieutenant-Colonel W. G. "Wood- 
Martin, '' Eeport on an Exploration of a Crannog Site in Meath." 
The following were exhibited : — 
Two Casts of Scottish Antiquities, presented by D. W. Kemp, Esq., 
Edinburgh. 
Gold Torque, recently added to the Museum of the Academy. 
Silver Coins, Hiberno-Danish, presented by the Hon. Robert 
Marsham. 
Donations to the Library were announced, and thanks were voted 
to the Donors. 
Letter read from the University of Bologna, thanking the Academy 
for sending a deputation to take part in the Eighth Centenary celebra- 
tion of the University. 
FeIDAY, IN'OVEMBEE 30, 1888. 
SiE RoBEET Kane, ll.d., f.e.s., in the Chair. 
Mr. "W. W. "Wilson and Mr. L. "W. King signed the Roll, and were 
admitted Members of the Academy. 
Donations to the Library were announced, and thanks were voted 
to the Donors. 
The following Science Grant, recommended by the Council, was 
confirmed : — 
£30 to Professor Cunningham, m.d., to aid him in his researches 
on " Cranio -Cerebral Topography." 
