121 J. Watcrliousc — The Application of PJiotograpliy, Sfc. 



be carried out on the move ; and therefore the photographic establishment 

 must be more or less stationary, and this may prevent its employment in 

 many cases where it might perhaps be o£ use. In the Abyssinian Cam- 

 paign, a staff of photographers from the School of Military Engineering, 

 Chatham, accompanied the force and did good service, under great difficul- 

 ties, in copying route maps and sketches, and in taking pictures of objects 

 and points of interest. In the Franco-German Campaign in 1870-71, the 

 Germans organised a photographic brigade to accompany the Head Quarters 

 of the army. It was found, however, that the photographers encum- 

 bered with apparatus, &c. could not keep up with the movements of the 

 Head Quarters and, indeed, the want of them does not seem to have been 

 very much felt.* 



If facilities exist for the transport and working of a small lithographic 

 press, it will be found more convenient to have original sketches drawn 

 with transfer ink for immediate transfer to zinc than to reproduce them by 

 photography, and for this purpose an excellent ink has been devised by 

 Capt. Abney, which may be used on any kind of paper without preliminary 

 preparation. It will also be found a great advantage to print copies of 

 maps on ordinary calico, because it can be folded and packed away much 

 more easily than paper and does not so readily get worn by use. This 

 plan has been adopted in the Surveyor General's Office with success in 

 preparing maps for the Camps of Exercise in this country. 



Another use photographic reproduction can be put to in time of 

 war is the preparation of miniature despatches to be sent by pigeon-post. 

 Such despatches were largely used in the Franco- German Campaign for 

 communicating with the beleaguered garrison and residents in Paris. This 

 is a service that photography alone can render and it is likely to be largely 

 utilised in any future European war in similar cases. 



* See Capt. Hannot's ' La Fhotographie dans les Armees '. 



