220 REPORTS ON THE STATE OP SCIENCE. — 1916. 



Other contributors include Professor Allen, Mr. Montague Cooper, 

 Mr. Cameron. Mr. Pritchett, Mr. A. E. Kitson, Mr. C. B. Storey, 

 the late Mr. J. Parker, Dr. G. Abbott, Mr. Evers- Swindell, the York- 

 shire Speleological Association, and Mr. E. Simpson. To all these 

 helpers the Committee owe and beg to tender their thanks. 



Prizes for photographs of scenery illustrating geological features 

 have been offered by the Tunbridge Wells Natural History Society. 



The Geological Survey has followed up the publication of a list of 

 its own English geological photograplis by one. of its Scottish pictures, 

 and made arrangements by which prints and slides may be purchased, 

 thus giving to students and teachers an excellent opportunity of getting 

 characteristic and typical geological illustrations. 



In spite of this it is thought that there will still be scope for the 

 issue of a new series by the Committee, as the ground covered by its 

 collection is at present wider than that of the Geological Survey. Un- 

 fortunately, want of time has delayed the publication of the new series, 

 but it is hoped that a method has now been found to bririig about the 

 long-promised publication. 



Few additions to the duplicate series have been made since the issue 

 of the published sets. Lectures on this series have been given by 

 Mr. Whitaker at several local scientific societies, including the Ipswich 

 and District Field Club, the Sidcup Literary and Scientific Society, the 

 Folkestone Natural Histoiy Society, and the Sutton Society ; as well 

 as at other Societies and Institutions at Croydon and Sutton. 



Applications by Local Societies for the loan of the duplicate collection 

 of prints or slides should be made to the Secretary. A descrip- 

 tive account of them can also be lent. The carriage and the making 

 good of any damage to slides are the only expenses to be borne by the 

 borrowing Society. 



The Committee recommend that they be reappointed, and that Pro- 

 fessor S. H. Reynolds be Secretaiy. A financial statement, given in 

 the appendix, shows that the assets of the Committee amount to 

 £169 8s. lOd. 



EIGHTEENTH LIST OF GEOLOGICAL PHOTOGRAPHS. 

 From August 23, 1910, to August 31, 1916. 



List of the geological photographs received and registered by the 

 Secretaries of the Committee since the publication of the last Report. 



Contributors are asked to affix the registered numl)ers, as given 

 below, to their negatives for convenience of future reference. Their 

 own numbers are added in order to enable them to do so. 



* indicates that photographs and slides may be purchased from the 

 donors or obtained through the address given with the series. 



Copies of other photographs desired can, in most instances, be 

 obtained from the photographer direct, or from the officers of the Local 

 Society under whose auspices the photograph was taken. The cost at 

 which copies may b'e obtained depends on the size of the print and on 

 local circumstances, over which the Committee have no control. 



The Committee do not assume the copyright of any photographs 



