RE-TOUCHING UNNECESSARY 31 



but for certain diatoms and other objects that 

 display excessively minute structure it has its 

 advantages, some of which, we hope, are 

 apparent in the illustrations. 



Excellent results have been obtained by 

 primitive or homely methods and appliances. 

 In fact two or three boxes telescopically ar- 

 ranged will answer all the ordinary purposes 

 of an elaborate camera fitted with long 

 bellows. 



In photographing the features of the human 

 being it is customary to submit the negatives 

 to a system of re-touching. The photographers 

 would do very little of this were it not for 

 the vanity of their customers, and they would 

 do very little photography if they were to 

 omit the re-touching process. 



But as regards the photography of micro- 

 scopic objects it is a mistake to add any line 

 or to make any object look as we would wish 

 it to look. Drawings from microscopic objects 

 often betray this defect. 



No artists 7 license should be resorted to 

 beyond reducing the density of, or strengthen- 



