THE BEAVER AS A SPECIES 221 
not to disturb the surroundings, or cause suspicions, 
and everything should be done as quietly as pos- 
sible. Be sure not to let moisture condense on the 
lens of your camera. This causes more failures 
than anyone will believe. During the autumn in 
northern countries everything becomes covered with 
a fine mist-like condensation. This is particularly 
noticeable on glass, and you cannot get a sharp 
image through it. Therefore wipe the lens 
thoroughly or protect it carefully by means ofa 
hood which will open immediately before the 
exposure. I dare not give information as to the 
best kind of outfit to use, for I have not yet found 
such a thing. Some new devices are being offered 
now, but not having tried them 1 do not feel 
justified in either giving their names or in recom- 
mending them. So far I have had the best results 
with electric apparatus, as they are quick, almost 
silent and fairly convenient, but they don’t always 
work. If using any sort of electric device, be sure 
to have an ample supply of batteries to take 
the place of those that through mishap become 
exhausted. I have had a tree dropped on my out- 
fit, branches pulled between the legs of the tripod, 
which was of course upset, and many other 
accidents, which go to show that the pitfalls of 
beaver photography are many and trying. A good 
temper, plenty of patience, a reasonably good outfit 
and a proper share of luck are the ingredients 
necessary. All successful photographs will be well 
