174 MARVELS OF FISH LIFE 



I have often attempted to photograph the fish in 

 a public aquarium, but have found that it is practic- 

 ally impossible to avoid the reflection of the tanks. 

 In aquaria with a good top light a sheet can be attached 

 to the top of the tank and carried over the photo- 

 grapher, as shown in the second plate facing page 24s. 

 In this manner not only is the reflection avoided, but 

 the fish are seen illuminated as in Nature. In most 

 aquaria, however, there is insufficient light for photo- 

 graphy of moving objects. 



