. Nature and the camera; how to photograph live birds and their nests; animals, wild and tame; reptiles; insects; fish and other aquatic forms; flowers, trees, and fungi . laced inside the groovesat the lower end will prevent this. An extra bottom board covered with white oil-cloth will be found useful when photographing hshthat stay on the bottom. This board should havean arrangement by which it can be tilted so that theend farthest from the glass may be elevated. Handles at either end of the aquarium are useful,but they should not be used when it is full of water;the strain is too great, and
. Nature and the camera; how to photograph live birds and their nests; animals, wild and tame; reptiles; insects; fish and other aquatic forms; flowers, trees, and fungi . laced inside the groovesat the lower end will prevent this. An extra bottom board covered with white oil-cloth will be found useful when photographing hshthat stay on the bottom. This board should havean arrangement by which it can be tilted so that theend farthest from the glass may be elevated. Handles at either end of the aquarium are useful,but they should not be used when it is full of water;the strain is too great, and is likely to cause much for the aquarium. Now we come to itssupport, and for this I can recommend nothing moresimple or more efficient than a pair of wooden horses,upon which two long thick boards should be length of these boards must depend on the focallength of the lens that is used. The camera placed onthese boards, asshown in the ac-companying dia-gram (Fig. 3),may be movedback and forth atwill. It is sel-dom necessary toraise it more thana couple of inches, and this may be done by usingone or more thicknesses of board beneath the Fg- 3- 96 NATURE AND THE CAMERA I have never found that the camera needed to besecured, its own weight being sufficient to hold it inplace. If desired, an arrangement could be easily-devised by which it would be secured to its support. With regard to the lens used in fish photography,the more rapid it is the better will be the is no particular advantage in its having verygreat focal length. About nine and a half inchesfor a six and a half by eight and a half lens is suffi-cient. The type of shutter that will be found mostsatisfactory is the focal plane ; not the drop-shutterin front of lens, but the kind that is set close to theplate. This gives the maximum illumination withthe shortest possible exposure, such as is made neces-sary by the rapid movement of fish. With fish, suchas the salmon family, the
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