410 Dr. Henry Woodward — Photography in Geology. 



district and bury up its towns : but, nevertheless, our coastline is soi* 

 extensive, owing to its indented and insular character, that we are 

 particularly exposed to the effect of storms and marine denudation, 

 so that our shores have undergone or are undergoing many changes, 

 some parts, like Sandwich, being deserted by the sea, and others, 

 like Eeculvers, Cromer, and South wold, being eaten away by the 

 waves. Cliff-sections, too, like those of Lyme Eegis in Dorsetshire, 

 and even harder rocks, like those of Muckros Head, co. Donegal (see 

 Plate XX), are constantly subject to the destructive action of the 

 sea, and even after a very few years undergo visible change of 

 contour and recede before its erosive attacks. Quarry-sections and 

 railway-cuttings, often of very great geological interest, are generally 

 only to be seen temporarily ; the former changing with the progress 

 of the work of extracting the stone, chalk, or ballast, the latter 

 too frequently being grassed over and otherwise rendered obscure 

 by rainwash from the surface. These have to be photographed at 

 once upon the spot, and this is not always easily accomplished. 

 Thanks, however, to a great number of enthusiastic amateurs who 

 have aided the Committee in its work, men like Professor 

 E. J. Garwood, Professor E. W. Eeid, Godfrey Bingley, A. K. 

 Coomaraswamy, A. S. Eeid, Professor S. H. Eeynolds, J. A. 

 Cunningham, W. L. Howie, G. J. Williams, and professional 

 photographers like A. Welch, the British Association series of 

 geological photographs has now attained a well - deserved and 

 recognised importance and value. 



Among the various advantages offered by the Photographs Com- 

 mittee as the outcome of their labours are : the supply of (1) sets 

 of geological photographs for use in museums, with appropriate 

 letterpress, both mounted and unmounted ; (2) sets of lantern-slides 

 for geological lectures ; (3) views for book illustrations, of which 

 many authors have availed themselves even within the last twelve 

 months. 



It would be difficult, however, to define the limits of the useful- 

 ness of these admirable pictures to the writer, the teacher, the 

 lecturer, the museum curator, the artists, and the public at large. 



The second series of geological photographs published by the 

 British Association Committee have just appeared. The set 

 comprises 4 whole plates, 18 half plates, and 4 quarter plates, 

 also a series of 26 lantern-slides. 



The photographs are all copyright. Descriptions in pamphlet 

 form accompany the photographs, and with the unmounted prints- 

 a set of labelling slips is sent. 



The description which accompanies each photograph has been 

 prepared with great care, either by the author of the photograph or 

 by some active member of the Committee, and occasionally small 

 sketches are added in the text, giving (diagram matically) the 

 geological details to be seen in the photograph. 



For example. Professor Grenville A. J. Cole writes of the 

 beautiful photograph taken by Mr, E. Welch (of 49, Lonsdale 

 Street, Belfast), a copy of which forms the subject of Plate XX 

 accompanying this notice : — 



