February 6th, /poo.] PROCEKDlNtiS. xiii 



General Meeting, February 6th, 1900. 

 Horace Lamb, M.A., I.L.D., F.R.S., President, in the Chair. 



Mr. \ViLLiAi\i GoLDTHORPK, Chairman of Salford Hundred 

 Quarter Sessions, was eleeted an ordinary member of the Society. 



Ordinary Meeting, February 6th, 1900. 

 Horace Lamb, M.A., LL.D., F.R.S., President, in the Chair. 



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

 books upon the table. 



The President nominated Messrs. H. W. Freston and 

 C. E. Stromeyer to be auditors of the Society's accounts for the 

 session 1 899-1 900. 



A paper entitled " On the Conditions for the Propaga- 

 tion of a Solitary Wave," was read by Mr. R. F. 

 Gwyther, M.A. 



This paper is printed in full in the Memoirs. 



Mr. Gwyther also read a paper " On the motion of the 

 Fluid Particles in a class of cases of Steady Motion." 



This paper is printed in full in the Memoirs . 



A paper on " Internal Migration in England and 

 Wales, 1881-91," was read by Professor A. W. Flux, M.A., in 

 which he gave an account of the results of an examination of the 

 net inward and outward movement in each registration district of 

 England and Wales in the interval between the censuses of 1881 

 and 1 89 1. The movement of the two sexes separately was taken, 

 as differences in intensity and direction for males and females 

 were not infrequent. Of the 54 registration counties (the Ridings 

 of Yorkshire being separately considered) 40 showed net efflux 

 for both sexes, and seven others for one of the two sexes ; of 

 the 632 districts 124 only showed net influx of population 



