322 KEPOKT— 1891. 



use of the camera. Bat it is very desirable that the work should be pur- 

 sued systematically in every county. A list should be drawn up by the 

 officers of the local societies, giving the localities of new sections opened, 

 besides particulars of old sections and other features worthy of reproduc- 

 tion and peiTaanent pictorial record. Several photographers have inti- 

 mated their willingness to assist the Committee in this way, if they were 

 informed of the localities of which photographs are desired. The Com- 

 mittee would be glad to receive from geologists generally such particulars, 

 which would be duly noted, and endeavours would be made to secure 

 photographs when opportunity offered. 



For the information of photographers, the following lists of desiderata 

 are given : — 



Per Professor James Geikie, EdinburgJi. 



Weathering of basalt-rock : old quarries, Salisbury Craigs, Edinburgh. 



"Volcanic agglomerate, penetrated by basalt-dykes : The Binn, Burntisland, Fife- 

 shire. 



■\Vliite trap (intrusive sheet) in sandstone and shales : Old limestone quarry, 

 near Oil Works, Burntisland. 



Diagonally-bedded sandstone : Seafield Tower, near Kirkcaldy. 



Unconformity between Silurian and Old Ked sandstone : Siccar Point, near 

 Cockburnspath, Berwickshire. 



Fault in carboniferous sandstones and shales : railway cutting, Craiglockhart 

 Station, Edinburgh. 



Fer Mr. John Hopkinson, of St. Albans. 



Chalk-pit at Bosmoor. 



Chalk-pit between Rickmansworth and Harefield. 



Chalk-pit on Eeed Hill, near Royston (anticlinal), sections of Woolwich and Read- 

 ing beds and London clay exposed in brickfields near Watford. 



Series of views of the chalk escapement through north of Hertfoidshire and 

 adjoining counties. 



Per Mr. D. Clague, Liverpool. 



Current bedded sandstones at Dingle Point on north bank of the Mersey. 

 OutcroiJ of coal seams at Doulton quarry, St. Helen's. 



These lists are, of course, capable of being largely extended, and are 

 inserted simply as examples of what is required. 



While the actual number of new photographs sent in for registration 

 during the year does not greatly exceed the number acknowledged in the 

 last report, it is gratifying to state that, as a whole, the subjects have 

 been selected with greater care to include the most typical views. It has 

 not been wished to restrict too greatly the definition of what is a 'geo- 

 logical photograph.' Views illustrating types of landscape scenery are 

 often extremely useful, though not perhaps enforcing any particular 

 geological feature. These will be simply described as : ' Landscape — 

 Silurian ' ; or, ' Landscape — Bunter Sandstone,' &c., as the case may be. 

 But, as the collection grows in numbers, it will be more convenient to 

 confine it to views which are especially typical and characteristic. For 

 the guidance of amateur photographers and others who might not be able 

 always to refer to a geological authority, the following explanatory para- 

 graph was inserted in the circular of instructions issued by the Com- 

 mittee : — 



Photographs are desired illustrative of characteristic rock-sections, especially 

 thos3 of a tjpicil character or temporary nature; important boulders; locahties 



