100 
Committee of Science. 
Sir William R. Hamilton, LL. D.; Rev. Hasigivey 
Lloyd, D.D.; James Apjohn, M. D.; Robert Ball, LL. D.; 
Sir Robert Kane, M. D.; George J. Allman, M. D.; Rev. 
Samuel Haughton, A. M. 
Committee of Polite Literature. 
Rey. William H. Drummond, D.D.; Rev. Charles W. 
Wall, D. D.; John Anster, LL. D.; Rev. Charles Graves, D. D.; 
Rey. Samuel Butcher, D. D.; Digby P. Starkey, Esq.; Rev. 
John H. Jellett, A. M. 
Committee of Antiquities. 
George Petrie, LL. D.; Rev. James H. Todd, D. D.; 
J. Huband Smith, Esq., A. M.; Frederick W. Burton, Esq. ; 
Samuel Ferguson, Esq.; Aquilla Smith, M.D.; the Earl of 
Dunraven. 
The Rey. Humphrey Lloyd, D. D., having left the Chair, 
and John Anster, LL. D., V.P., having been called thereto, 
Ir was ResoLveD UNANIMOUSLY,—That the most sin- 
cere and affectionate thanks of the Royal Irish Academy be, 
and that they are hereby presented, to their late President, 
the Rev. Humphrey Lloyd, D. D., for the dignity, diligence, 
and zeal, with which he has filled their chair, and otherwise 
attended to the interests of their body, during the last five 
years. 
Sir William R. Hamilton communicated to the Academy 
a generalization of Pascal’s theorem, to which he had been 
led by the method of quaternions. 
Equation of Homodeuterism: = (+ ABCDEF.GHIK)=0; 
ABCDEF = aconic function of a hexagon ; 
GHIK = volume of a pyramid. 
Sir Wm. R. Hamilton proposes to give a more full expla- 
nation of the nature of this equation of homodeuterism, and of 
