320 Mr J. Brill, On the Geometrical Interpretation, &c. [Nov. 26. 
He gives the same enumeration of equipotential families consisting 
of curves of the second order as I have done in Art. 7, and proves 
that it is complete. All the families of equipotential cubics 
discussed by him consist of cubics passing through nine fixed 
points. 
I find that the enumeration of the equipotential families of 
conics had been given by Vonder Miihll in the sixty-ninth volume 
of Crelle ; but his work is extremely complicated.—Dec. 18, 1888. ] 
COUNCIL FOR 1888—9. 
President. 
JOHN WILLIS CLARK, M.A., F.S.A., Trinity College. 
Vice-Presidents. 
G. G. Stoxss, Se.D., P.R.S., Lucasian Professor. 
A. CaAyLey, Sc.D., F.R.S., Sadlerian Professor. 
K. J. Routs, Sc.D., F.R.S., Peterhouse. 
Treasurer. 
R. T. GuazeBroox, M.A., F.R.S., Trinity College. 
Secretaries. 
J. Larmor, M.A., St John’s College. 
M. M. Parrison-Murr, M.A., Gonville and Caius College. 
S. F. Harmer, M.A., King’s College. 
Ordinary Members of the Council. 
J. J. THomson, M.A., F.R.S., Cavendish Professor, 
G. D. Liverne, M.A., F.R.S., Professor of Chemistry. 
A. R. Forsyru, M.A., F.RS., Trinity College. 
J. E. Marr, M.A., St John’s College. 
J. C. Adams, Sc.D., F.R.S., Lowndean Professor. 
A. 8. Lea, 8c.D., Gonville and Caius College. 
C. C. Basrneton, M.A., F.R.S., Professor of Botany. 
T. McK. Hucues, M.A., Professor of Geology. 
J. W. L. GuaisHer, Se.D., F.R.S., Trinity College. 
W. N. SHaw, M.A., Emmanuel College. 
W. GarRDINER, M.A., Clare College. 
W. Bateson, M.A., St John’s College. 
