l66 yOUKNAI. OF rONCHOLOGV, VOL. l6, NO. 6, JUNE, I92I. 



in it till his death in 1919. From the commencement of the census 

 scheme, Roeback worked in close co-operation with J. W. Taylor, in 

 preparation for the latter's Monograph., and in 1908 {Journal, xii, p. 

 255) started a fresh and effective campaign for acceleration, in con- 

 junction with the official recorder of the Society. It is in no way 

 derogatory to the work of the other recorders — and if it were it would 

 remain the plain fact-^to remark that the great bulk of the twenty- 

 nine record books is in Roebuck's handwriting. At the end of 1918 

 or thereabouts he reckons on a slip of paper that the total number of 

 records is 59,432, and no one will complain if in common talk the 

 results come to be known as "Roebuck's Census." It would hardly 

 be possible to give a list of those, young and old, who have in a 

 variety of ways helped in the work, some with spontaneous 

 enthusiasm, others with that interest and activity which Roebuck's 

 pertinacity could arouse so well. A few workers have refused their 

 co-operation, out of shyness at having their identifications critically 

 revised, or because they did not care for the personality of the 

 referees, or because they loved their specimens too well, or from 

 simple lack of interest or some of the other natural emotions which 

 lead men to curious actions. Though the number of these is small, 

 it is perhaps hardly worth while to catalogue their names; they have 

 at any rate deprived themselves of any right to criticise the census 

 for deficiencies which in a better mind they could have themselves 

 remedied. 



The printed versions of the census appear to have been : — 

 (i) by J. W. Taylor and W. D. Roebuck, communicated to the 



Society on i6th April, 1885, and printed in the Journal, vol. 



iv, p. 319. 



(2) a revised version of the same, on pp. 94-112 of Latid attd 



Freshwater Shells, by J. W. Williams; first edition, 1889, 

 and, again brought up-to-date, in the third edition, 1901. 



(3) by W. D. Roebuck, on pp. 182-209 of The Collector's Manual 



of British Land and Fres/nvater Shells, by L. E. Adams ; 

 second edition, 1896. 



(4) by L. E. Adams, communicated to the Society on nth June, 



1902, and printed in the Journal, vol. x, p. 217, witli a map. 



(5) the records for Scotland, by W. D. Roebuck. Proc. Roy. 



Phys. Soc. Edin., vol. x (1890), pp. 437-501 in detail, and 

 for Easterness {Scottish Naturalist, 19 16, p. 107), for Argyll 

 {ib. p. 229), for Wigtown {ib. p. 253), for Kirkcudbright {ib. 

 1917, p, 7), and for Elgin {ib. p. 79). 

 In 191 1 the Council reported that the publication of a new version 

 was under consideration, and in 1916 resolved that it could not be 



