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PHOTOGRAPHY FOR NATURALISTS. 



few hours before delineation, may not unreasonably be 

 held to account for some varieties among the salmonidse. 

 Little need be said here as regards the photography 

 of dead fish. It is sometimes unavoidable, but should 

 always be regarded as one's last resource. Bearing in 

 mind the requirements of a scientific picture, the fins 

 should be spread out and careful measurements recorded. 



Sticklebacks. 



It is desirable to take the ordinary precautions for 

 correct colour values in the negative, and a vertical 

 stand will be, owing to the slipperiness of the subject, 

 almost a necessity. Apart from these small points, 

 there is nothing to deter the ordinary photographer, or 

 to make other than the ordinary methods applicable. 

 The writer is inclined to deprecate the attempt which 

 has not infrequently been made to represent a dead 



