PEEFACE 



That it has been possible to compile this Index has been largely due to 

 the generosity of Major Robert A. Wilson, D.S.O., of Bulls, who under- 

 took the cost of preparmg the MS. On receipt of this it was carefully 

 checked and amended by the Assistant Secretary (Miss Wood), and then 

 distributed to referees in each branch of science for final revision as to 

 the arrangement of the matter. For this work the thanks of the Board 

 of Governors of the Institute are due to Professors Kirk, Easterfield, 

 Marsden, and Cotton, Dr. C. M. Hector, Messrs. Elsdon Best, W. R. B. 

 Oliver, and J. C. Andersen. 



This Index is supplementary to the Index of volumes 1-40 published 

 in 1911. Like it, it deals only with the authors and titles of the various 

 papers and abstracts, and it includes the eleven volumes 41-51. No 

 attempt has been made to index the actual subject-matter : and, whilst 

 the two present volumes serve well enough as an index of authors, it is 

 recognized that there is urgent need for a complete subject-index of the 

 whole of the volumes issued. It is hoped that the Institute may be in 

 a position to undertake this before very long. 



