^S NOTES ON THE GKOLOGY OF DERBYSHIRE. 



Photography for the collection, preservation, and systematic 

 registration of photographs of geological interest in the United 

 Kingdom. Views are desired illustrative of characteristic rock 

 sections, especially those of a typical or temporary nature, railway 

 cuttings, important boulders, localities affected by denudation, or 

 where marked physiographical changes are in operation, raised 

 beaches, characteristic river valleys, escarpments and other 

 landscape features, glacial phenomena, as roches fiwntonnees, 

 moraines, and natural views of geological interest. They should 

 be taken under skilled geological direction, and accompanied by 

 certain details. Selections might be made from the numerous 

 photographs of Derbyshire which have been published. Good 

 photographs of the interiors of caverns might be obtained by 

 means of the magnesium flash light. The two new railways 

 which are being constructed in the county, viz., the Dore and 

 Chinley (which passes through the coal measures and grit) and 

 the Buxton and Ashbourne branch of the L. and N. W. R. (which 

 passes through the limestone), will probably offer a field for the 

 geological photographer. The first year's operations of the B. A. 

 Committee have resulted in a collection of 270 photographs of 

 considerable scientific interest. 



I hope that these few notes will be useful to those members of 

 our Society who would like to take up geological work. Although 

 we have few, perhaps, who are both willing and able to devote 

 much spare time to this branch of science, yet all may help to 

 some little extent, and our Society may be able to do much in 

 bringing together workers in different parts of the county who are 

 at present unknown to one another. 



