November 30th, iSgy?^ Proceedings. xi 



Ordinary Meeting, November 30th, 1897. 

 James Cosmo Melvill, M.A., F.L.S., President, in the Chair. 



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

 books upon the table. 



The President announced that the Council had awarded 

 the Wilde Gold Medal of the Society for 1898 to Sir Joseph 

 Dalton Hooker, C.B., G.C.S.I., F.R.S., in recognition of his 

 eminent services to all branches of Botanical Science ; and an 

 original Dalton Medal of the Society struck in 1864, for 1898 

 to Dr. Edward Schunck, F.R.S., for his remarkable series of 

 researches on the natural colouring matters ; and also the 

 Premium under the Wilde Deed of Trust for 1898 to Mr. John 

 Butterworth, of Shaw, for his paper printed in the last volume of 

 the Ma7tchester Memoirs " On some further investigations of 

 fossil seeds of the genus Lagenostojna Williamson." The date 

 of the meeting for the presentation of the medals and the 

 delivery of the Wilde lecture would be announced at a later date. 



Professor Horace Lamb, F.R.S., read a paper '* On waves 

 in a medium having a periodic discontinuity of 

 structure." 



This paper is printed in full in the Memoirs. 



Professor Reynolds, Mr. Tristram ?ind Mr. Barnes took part 

 in the discussion. 



