234 HOW TO STUDY BIRDS 



gaslight turned down quite low. A few plates 

 spoiled in a good test will be well expended, and the 

 result should be written down for future use. If 1 

 rightly timed and properly developed in each case, 

 the enlarged print should appear just as strong 

 and bright as the original, and even more so, if de- 

 sired. 



If the original was weak or flat, the final result can 

 be greatly improved by such a process, either with 

 or without enlargement. Should it need strengthen- 

 ing only to a slight degree, simply develop both the 

 new positive and negative for contrast, being careful 

 not to over-expose, and to carry the development to 

 the full. If the original is decidedly weak, make the 

 best possible print from it on contrastive glossy velox, 

 or similar paper, and then photograph the print, be- 

 ing careful to choose a light that will not show up the 

 grain of the paper, preferably one coming from both 

 sides, by the use of a mirror. Develop this for con- 

 trast, and the result may give a pleasant surprise 

 the dead restored to life. 



The above suggestion was only for the enlarge- 

 ment of a part of a negative, to a 4x5 size. But to 

 make larger negatives, as I do, from which to print 

 pictures for framing 8xio or 11x14 if one is 

 ingenious with tools it is not hard to improvise a rude 

 rear camera, merely a light-tight box, one section to 

 slide inside the other, instead of having bellows, and 

 a place for the large holder at the rear. The holder 

 can be either bought or made, as, for that matter, can 



