PHOTOGRAPHY FOR NATURALISTS. 



Grass Snake. 



Suppose, then, that the photographer has, from 

 among his store of natural history subjects, selected a 

 few which seem possible from a decorative standpoint, 

 how is he to proceed ? In the first place, he must 

 decide on the size of the ornamentation desired ; in the 

 second place, on suitable means of reproduction. His 

 taste alone will govern the first decision. As regards 

 the second there is no doubt whatever that, for a 

 natural history subject, the only really satisfactory 

 printing method is that of the carbon transparency 

 backed with what is suitable to the subject. 



This printing process is so intrinsically beautiful, 

 and so little employed, that the writer feels justified in 

 treating it at some length. Let us consider its 

 advantages. To begin with, we have practically an 

 unlimited range of colour. Take a blue carbon 

 transparency, and immerse it in a weak solution of 

 picric acid : in about half-a-minute's time it will have 



