Proceedings. 89 



General Meeting, February 7th, 1893. 



Professor ARTHUR SCHUSTER, Ph.D., F.R.S., F.R.A.S., 

 President, in the Chair. 



William Crawford Williamson, M.R.C.S., F.R.S., 

 LL.D., &c., Past President of the Society, now of London, 

 was elected an honorary member. 



Ordinary Meeting, February 7th, 1893. 



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

 President, in the Chair. 



The thanks of the members were voted to the donors of 

 the books upon the table. 



Mr. Francis Jones, F.R.S. Ed., F.C.S., and Mr. Harry 

 Grimshaw, F.C.S., were appointed auditors of the Society's 

 accounts for the current year. 



A letter from Mr. Thomas Kay, enclosing slender 

 filaments of wood from an oak tree at the Wood Farm, 

 Torkington, near Stockport, the upper portion of which was 

 shattered into such filaments by a stroke of lightning, was 

 read. 



Mr. C. S. Trapp exhibited a specimen of lead pipe laid 

 along grass fields many years ago for the conveyance of 

 water from a spring. The pipe was remarkably eroded on the 

 under surface, the upper surface and the interior being 

 unaffected. The erosion was continuous for the length of 



