AQUARIUM. 



203 



No. 7 Pond 150 by 60 feet 



8 " 



9 ....:. 



10 " 



n 



12 



13 " 



14 to 20 Ponds. 



120 

 60 



100 

 60 

 90 



50 

 60 



60 



40 

 60 

 60 

 80 

 40 

 35 ft. each 



whole arrangement being so exceeding- 

 ly simple yet eminently effective as to 

 be worthy of admiration. 



Many of the ponds abound in myrio- 

 phyllum, potamogeton, chara and water 

 lilies, which offer excellent shelter to 

 the fishes and some protection from 

 natural enemies. Shotgun patrol is 



FIG. 3. PONDS FOUR AND ONE. 



As indicated, many of the ponds con- 

 tain a number of live springs and all 

 are fed from the three feeders, the in- 

 takes indicated by a single line and the 

 outlets by double lines, designating 

 the channels and sluices. The outflow 

 is all returned to the main spring run, 

 and the water supply is confined in dug 

 ditches controlled by a simple but 

 effective system of flood gates. Each 

 of the feeders would contain about two 

 feet width of water after an average 

 rainfall and the spring run four or five 

 feet. 



The sloping bottoms of the ponds 

 permit of any depth of water from a 

 few inches to two or three feet, the 



also maintained, but the winged ene- 

 mies are so wary that another simpler 

 method of protection is more effective. 

 Around all the ponds posts have been 

 erected upon which muskrat traps are 

 fastened which capture kingfishers, 

 shikepokes, shrikes and herons, while 

 the shotgun and rifle take care of musk- 

 rats, snakes and frogs. 



It is the intention of the owner to 

 also extensively breed the finer toy 

 varieties of the goldfish, spawning and 

 hatching them in his greenhouse and 

 then transferring them to the ponds 

 where they will sooner acquire salable 

 size. At present they are reared in the 

 greenhouse tanks. 



