PHOTO- TRAPPING. 293 



Before leaving England experiments were made with the trap 

 at a Lapwing's nest, which were successful three times out of four, 

 only so far as that the bird duly went on and released the shutter. 

 This at first was uncovered and rather noisy, and the bird 

 "jumped"; the fourth try, the shutter having been improved 

 and covered in, was entirely successful. The Lapwing, how- 

 ever, this last time sat on the switch for a couple of hours, and 

 completely exhausted the dry battery, — this contingency not 

 having been allowed for. An automatic cut-off has now been 

 made, and, after the release of the shutter, no more battery 

 action can possibly take place, however long the switch is kept 

 pressed down. The shutter, by the way, was made from my 

 designs by Messrs. Dallmeyer, of Newman Street. 



