ON PHOTOGRAPHS OF GEOLOGICAL INTEREST. 



231 



To the same category belong also Mr. Harrison's Isle of Wight se 

 and his series illustrating Pliocene and Pleistocene rocks in Suffolk. 

 The Croydon Scientific and Natural History Society, through Mr. Robarts, 

 continues its illustrations of local geology, a work which in future will 

 presumably be carried on by the recently inaugurated county survey of 

 Surrey on a larger scale. The Philosophical Society of the University of 

 Durham also sends, through Mr. D. Woolacott, photographs in continua- 

 tion of its former work in its county. 



Mr. Welch is continuing his admirable task of illustrating Irish geo- 

 logical features, and sends beautiful sets of platinotypes from Antrim, 

 Donegal, Down, Dublin, Fermanagh, and Sligo. Mr. Watson contributes 

 well-taken illustrations of Carboniferous trees. 



In the second place, an increasing number of photographs are now so 

 well taken and from such advantageous points of view that they tell their 

 own story and depend much less on description than hitherto. 



Again, the photographs are of a more serious geological character than 

 ever before, and, although many of them are pretty pictures as well, they 

 illustrate important and typical geological phenomena and features really 

 worthy of record. In some cases new discoveries and facts very difficult 

 of portrayal are attempted and with considerable success. 



Lastly, unusual care has been taken in the descriptions ; and although 

 these undoubtedly impose a tax on the photographers' time and patience, 

 they add very greatly to the permanent value of the photographs. 



In addition to the larger sets specified above, especial mention should 

 be made of the following :— Messrs. G. V. and H. Preston's and Mr. Reid's 

 Cornish Raised Beaches ; Mr. Wrench's examples of glaciation in Derby- 

 shire ; Mr. Monckton's sets from Essex, Kent, Surrey, and Yorkshire ; 

 Mr. Robinson's pretty set from Yorkshire, and Mr. Metcalfe's very choice 

 trio from Antrim. 



To all the gentlemen mentioned above the very best thanks of the 

 Committee are due, and also to the following, who have helped by contri- 

 butions and other assistance : Mr. E. Pierce, Mr. Wheen, Mr. C. H, 

 Topham, Mr. J. H. Baldock, Mr. W. G. Fearnsides, Mr. G. T. Atchison, 

 Mr. W. J. Forrest, Mr. C. J. Watson, Mr. J. Barrowman, Mr. W. H 

 Beeby, and Miss M. K. Andrews. 



The Committee would be glad if all contributors would make use of 

 local numbers as a key to their photographs. The method has several 

 advantages. In addition to being a means of identification by the Secre- 

 tary it enables contributors to recognise their prints in the list and to affix 

 the B.A. number to their negatives. Also, if the number is placed right 

 way up on the photograph, it affords a useful and sometimes needed guide 



