1879.] Physiology of the Nervous System of the Crayfish. 379 



Henry Bessemer, Assoc. Inst. [ I 



C. E. 



Henry Francis Blanford, F.G.S. ( 



George Stewardson Brady, M.D., ^ 

 F.L.S. 



Prof. Alexander Crum Brown, ( 



D. Sc., M.D. ^ 

 Walter Lawry Bnller, D.Sc, ( 



F.L.S. 



Charles Creighton, M.D. J 



William Sweetland Dallas, F.L.S. ( 



George Howard Darwin, M.A. I 



Francis Stephen Bennet Francois ( 



de Chaumont, M.D. ( 



John Dixon, C.E. £ 

 Sir George Duckett, Bart. 



Prof. Joseph D. Everett, M.A., k 



D.C.L. 3 



William Galloway. I 



Henry Haver sham Godwin- J 



Ansten, Lieut. -Col. I 

 Prof. Thomas Minchin Goodeve, 



M.A. g 



Charles Alexander Gordon, M.D., "\ 



C.B. A 



Charles Graves, Bishop of Lime- J 



rick. I 



Townshend Monckton Hall, C 



F.G.S. I 

 John Harley, M.D., F.L.S. 



John Deakin Heaton, M.D. 1 

 Henry M. Jeffery, M.A. 

 John Edward Lee, F.S.A., F.G.S. 



The following Papers were read: — 



Prof. George Downing Liveing, 

 M.A. 



George Matthey, F.C.S. 

 William Munro, General, C.B., 

 F.L.S. 



Charles Henry Owen, Col. B.A. 

 William Henry Preece, C.E. 

 Charles Bland Badcliffe, M.D., 



F.R.C.P. 

 John Rae, LL.D. 

 George Banks Rennie, C.E. 

 Prof. J. Emerson Reynolds, M.D. 

 George F. Rodwell, F.C.S. 

 George John Romanes, M.A. 

 Sir Sidney Smith Saunders, 

 C.M.G. 



Arthur Schuster, Ph.D., F.R.A.S. 

 Michael Scott, M.I.C.E. 

 Prof. Harry Govier Seeley, F.L.S. 

 John Spiller, F.C.S. 

 Bindon Blood Stoney, M.A., 



M.I.C.E. 

 Sir Henry Thompson, F.R.C.S. 

 William A. Tilden, D.Sc. 

 Alfred Tribe, F.C.S. 

 James Clifton Ward, F.G.S. 

 Benjamin Williamson, M.A. 

 Charles R. Alder Wright, D.Sc. 

 Prof. Edward Percival Wright, 



M.D., M.A., F.L.S. 

 Thomas Wright, M.D., F.R.S.E., 

 F.G.S. 



I. " Observations on the Physiology of the Nervous System of 

 the Crayfish (Astacus Fluviatilis)" By JAMES Ward, M.A., 

 Fellow of Trinity College, Cambridge. Communicated by 

 Michael Foster, M.D., F.R.S., Prselector of Trinity College, 

 Cambridge. Received February 17, 1879. 



I. Wlien one of the supra-oesophageal commissures is divided, the whole 

 body of the crayfish on the injured side is more or less enfeebled, with 



2 f 2 



