April 20th, I goQ.'\ PROCEEDINGS. xxiii 



general cavity, closely applied to the inner surface of the apical 

 plate, and are probably composed of the same substance as are 

 similar cells described by MacBride in other parts of the body 

 — especially in large masses beneath the four epaulettes — of the 

 piuteus of Echinus esculentus. This substance occurs, with a 

 similar distribution, in the piuteus of E. miliaris. Whether the 

 definitely paired spots of this and the red pigment in association 

 with the apical plate of E. miliaris, or the tufts of stiff cilia also 

 found in this position, have any sensory function, as might 

 a priori be expected from their position, has not been 

 determined. 



Ordinary Meeting, May 4th, 1909. 



Mr. Francis Jones, M.Sc, F.R.S.E., President, in the Chair. 



The thanks of the members were voted to the donors of the 

 books upon the tables. The following were among the recent 

 accessions to the Society's Library: ^' Flora Cape?isis," ...\o\. 4 

 sect. I, part 6, by Sir W. T. Thiselton-Uyer (8vo, London, 

 1909), purchased; '^ Third Report on Research Work... on the 

 Storage of jRazu River Water antecedent to Filtration,^' by 

 Dr. A. C. Houston (fol., London, 1909), presented by the 

 Metropolitan Water Board ; " The Battle of Gettysburg," by 



F. A. Haskell (8vo., n. pi., 1908), presented by the Wisconsin 

 History Commission; '•'•Atlas of the World with Index," by 



G. W. Bacon (fol, London, 1908), and ^'•International 

 Dictionary of the English language," by W. Webster (fol., 

 London, 1907), purchased. 



Mr. R. L. Taylor, F.LC, exhibited a drawing of John 

 Dalton, signed by J. Stephenson, and dated June, 1882, which 

 had been for many years in the possession of Messrs. Steinthal. 

 It was thought that this was the original from which the 

 celebrated engraving by that artist was made. 



