-^ Photography by Day and by Night 



travellers — I may say that they are beset with difficulties. 

 They require a long exposure, and are best suited, there- 

 fore, for stationary objects. If you wish to photograph 

 animals in motion, you must learn to expose your negative 



THE FIRST DRY-PLATE PHOTOGRAPH, PROBABLY, EVER TAKEN IN THE AFRICAN 

 DESERT. THE WORK OF ONE OF THE OLDEST OF AFRICAN EXPLORERS, 

 PROFESSOR FRITSCH, IT REPRESENTS AN ELAND WHICH HE HAD KILLED 

 A SPECIES THEN FREQUENTLY MET WITH IN CAPE COLONY, 



long enough to secure a clear impression, yet not so long 

 as to make the moving animals come out quite blurred. 

 I am strongly of opinion that it is not of much advantage 

 to make out a table of calculations as to the time ot 



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