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THE AQUARIUM, OCTOBER, 1893. 



A QtrARTERLY MAGAZINE. 



50 cts. a Tear. Single Copies, 15 cts. Each. 

 Sample Copies Free. 



Advertising Eates on Application. 



HUGO MULERTT, Publisher, 

 173 Nostrand Av., Brooklyn, N. Y. 



It thrives best in ponds, the bottom 

 of which is muddy, and feeds upon 

 such food as may be given the carp. It 

 is cultivated together with the latter, 

 but is of much slower growth, rarely 

 exceeding eight pounds in weight. It 

 has many admirers as an article of diet 

 and is a profitable, good selling fish. 



At the age of three years it com- 

 mences to spawn, at the same season 

 and after the same manner as the car]). 

 The eggs are less adhesive than those 

 of that fish, and when extruded, drop 

 to the bottom among the water plants, 

 remaining till hatched. The tench is 

 also very productive, as much so as the 

 carp; and is found pretty much all over 

 Germany, in fact being native there. 



THE GOLDEN-TENCH. 



{Tinea aureus.) 

 Die Goldschleihe. Le tanche d'or. 



The ground color of this variety, 

 which is also a native of Germany, 

 is chrome-yellow, speckled here and 

 there with intensely black spots ; each 

 scale is ornamented with a dot of 

 reddish-gold, giving the fish a beauti- 

 ful appearance and making it very de- 

 sirable as an inmate of the aquarium, 

 in which it does remarkably well, be- 

 coming very tame. 



{To Be Continued.) 



Errata— On page 51, third line from below, read 

 40°F. instead of 10°F. 



Design for an Ac^tarium Ornament. 



The part of the rockwork for below the surface of 

 the water is Tuffstone. the miniature castle and bridge 



are fired clay. 



♦- 



VALLLSNERIA FOR THE 

 WINTEH. 



Vallisneria spiralis that is to be used 

 in the laboratory during the winter and 

 in early spring, should now be collected 

 and planted in a pot, using ordinary 

 gravel, as found in the creeks, for soil. 

 The pot is set in a tub of pure water of 

 sufficient depth to cover the Vallis- 

 neria about three inches. The tub is 

 placed in the open air, in the garden, 

 or on some roof where the sun will 

 strike it, and left there until ice, to 

 the thickness of about half an inch, has 

 formed on the water. This ice is 

 broken, and the pot containing the 

 root or sets of the Vallisneria removed 

 to an aquarium tank or similar vessel 

 holding water, and kejit in a cool place 

 in the house. 



About Christmas this vessel is moved 

 into a warmer room and placed where 

 it will get a strong light — sunlight, if 

 possible. Here the sets will start al- 

 most at once. If wanted sooner, some 

 sets may be started earlier, but they 

 should have had frost, and a little rest 

 after that. 



