May, 1922 
FOREST AND STREAM 
223 
I have actual photographic record of 
about half a dozen. It seemed to me 
very strange that so simple a device as 
a camera on the end of a string could 
not be made to work at the proper time. 
Analyzing my lack of success I found it 
to be due to these causes : 
(1) The crows did not come to the 
bait at all ; or 
(2) They came, but were instantly 
frightened and left before I could pho- 
tograph them; or 
(3) They arrived so early in the 
morning that the photograph was under- 
exposed, even with a slow exposure of 
1/25 of a second, because the light was 
poor; or 
(4) They moved so fast that the cam- 
era, set for this slow exposure, did not 
obtain a clear image. 
At this point parental authority in- 
sisted that I should get more sleep in the 
morning, and my midnight sorties came 
to an end, with only one good photo- 
graph to my credit. I was perplexed 
what to do next, but just as determined 
as ever. 
S OME time passed by, and then I de- 
cided to become a camera-trapper as 
well as a camera-hunter. I determined 
not to lose any more sleep on the crows. 
I would have a machine near the rock 
to take the photograph for me, while I 
remained snugly in bed. I would make 
the crow photograph himself when he 
came for the bait. If the photographs 
taken with this machine failed in any 
way, at least I would have been spared 
the long vigil. I would become a trap- 
per with a camera. 
An electrical device, my first success- 
ful camera-trap, was constructed. Fresh 
fish for bait was used on the same rock. 
From the bait ran a black thread hidden 
by seaweed with scrupulous care (for I 
was dealing with the wariest of birds). 
This thread passed through screw-eyes, 
and by devious ways to a minute electric 
switch near the camera. The action of 
pulling at the bait closed this switch, 
which formed part of an electric circuit, 
operating a magnet and spring which 
made the exposure by means of an “an- 
tinus” or cable shutter - release. The 
machine, which included a watertight 
wooden box to protect the camera, 
worked well after a few experimental 
trials. 
During the last few days of testing 
this apparatus, I left bait regularly on 
the crow rock. As before, a pile of sea- 
weed near the rock marked the spot 
where the camera was to be concealed. 
When the crows were coming regularly, 
and apparently without fear, I finally 
hid the machine under the seaweed and 
connected it with the bait by the thread. 
There were a number of failures, 
owing to the darkness of the very early 
morning when the birds arrived. Once 
the thread was poorly arranged and a 
crow flew into it too near the camera. 
One morning about 8 o’clock I hap- 
pened to be watching my “trap” from a 
bouse three hundred yards away. The 
sun was shining on the sparkling blue 
water. A crow suddenly swooped down 
from the woods, paused for an instant 
A grand old bird — too feir away for an easy shot 
Then, out of the brush — a leaping fox 
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