FISH PHOTOGRAPHY AT HOME 181 



do so in a position where it was possible to take a 

 photograph. 



The tank in which these illustrations were obtained 

 was arranged in much the same manner as that already 

 described. Above the tank was placed a large bucket 

 which was filled up two or three times a day with water 

 containing thousands of cyclops, daphnia, and other 

 minute fresh-water crustaceans, and the water from 

 this bucket was allowed to flow slowly through the 

 tank. As this form of food is most useful for feeding 

 all sorts of small fish in aquaria, I will describe a simple 

 method of obtaining it. 



Procure two or three large tubs, and on the bottom 

 of each place six inches of straw and manure. On the 

 top of this can be planted a few water-weeds to make 

 the tubs artistic. 



Next procure a wide-mouthed bottle and a glass 

 funnel which will go into the bottle. Over the mouth 

 of the funnel tie a piece of very fine muslin, and to the 

 other end of the funnel attach about a foot of india- 

 rubber tubing. Now go to the nearest ditch or stag- 

 nant pond, and, using a pail, fill up the bottle with 

 water, put the funnel into the water in the bottle, and 

 start a syphon action by means of the rubber tubing. 

 As the water is syphoned out of the bottle, keep on 

 replacing it with water from the pond. In this manner 

 gallons of water pass through the bottle, but the fresh 

 water crustaceans are prevented from escaping by the 

 muslin stretched over the mouth of the funnel. Very 



