The Publishers, 
Messrs. Harrison & Sons, Ltd., 
44-47, St. Martin’s Lane, 
London, W.C. 2, 
will be pleased to hear from any Fellow of The Royal 
Society who is in possession of the undermentioned 
Volumes of 
The Philosophical Transactions, 
and who is not desirous of retaining the same: 
Series “A,” Volumes 206, 207, 213. 
