Tent and Camera : The Tools of Bird-Photography. 35 



supplies close at hand. Under these conditions it is not necessary to carry more than two 

 or three dozen plates at a time. By developing on the day of exposure it is possible to 

 correct errors or fill up the gaps on the day following. 



Orthochromatic plates require careful treatment, but in sl<illful hands offer advan- 

 tages which should not be neglected. This is well illustrated in the case of birds of bril- 

 liant colors like the Orioles, which on ordinary plates appear as " Blackbirds " (compare 

 figures 14, I 5). 



Accessories. — The minor articles which are needed to complete the photographer's 

 outfit, all of which can be rolled up with the tent or better carried in a hand bag, will be 

 suggested by a little experience in the field. A saw, hatchet and nails are often required, 

 as well as scissors, pins, the supply of which is always liable to run out, and a small hand 

 mirror for use in setting the shutter from the rear. A toilet hand mirror which can be 

 turned at any angle is a convenient means of inspecting the interior of nests inaccessible 

 to the hand, but within reach of the mirror attached to a pole. 



