612 Reviews — Geological Photogra2)hs. 



The duplicate collection of slides has been exhibited and explained 

 ■within the year by Mr. Whitaker at the following local scientific 

 societies : — The Christ's Hospital Natural History Society ; theGreville 

 Place Literary Society, Maida Vale ; the Stratford Congregational 

 Literary Society ; and the Ashmolean Natural History Society, 

 Oxford. 



Applications by Local Societies for the loan of the duplicate 

 collection should be made to the Secretary. Either prints or slides, 

 or both, can be lent, with a descriptive account of the slides. The 

 carriage and the making good of any damage to slides or prints are 

 expenses borne by the borrowing society. 



The Committee recommend that they be reappointed, without 

 a grant. 



Fifteenth List of Geological Photographs. 



(To August 12, 1904.) 



This list includes the geological photographs which have been 

 received by the Secretaiy of the Committee since the publication of 

 the last report. Photographers are asked to aflSx the registered 

 numbers to their negatives for convenience of future reference. 

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



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

 from the photographer direct, or from the officers of the local society 

 under whose auspices the views were taken. 



The Committee do not assume the copyright of any yhotogra'phs 

 included in this list. Inquiries respecting photographs, and appli- 

 cations for permission to reproduce them should bo addressed to the 

 photographers direct. 



It is recommended that, wherever the negative is suitable, the 

 print be made by the cold-bath platinotype process. 



The very best photographs lose half their utility, and all their 

 value as documentary evidence, unless accurately described ; and the 

 Secretary would be grateful if, whenever possible, such explanatory 

 details as can be given were written on the forms supplied by him 

 for the purpose, and not on the bade of the photograph or elsewhere. 

 Much labour and error of transcription would thereby be saved. 

 It is well, also, to use a permanent ink for this purpose. A local 

 number, by which the print and negative can be recognised, should 

 be written on the back of the photograph and on the top right-hand 

 corner of the form. 



Copies of photographs should be sent unmounted to Professor 

 W. W. Watts, F.R.S., The University, Birmingham, and forms 

 may be obtained from him. 



Our Plate XVIII this month is taken from one of the series of 

 Photographs of Geological Interest issued by the British Association 

 Committee, and represents an excellent view of "London Bridge," 

 a natural arch at Torquay, Devonshire (No. 2,938 of the series). 

 Photographed and reproduced by permission of Professor S. H. 

 Reynolds, M.A., F.G.S. The following description by Mr. W. A. E. 



