

A Simple Heated Aquarium 



H. E. FIKfCKH 



Royal Zoological Society of New Soutk Wales 



■••—- «f 



* — 4 



Even in aquarian nature-study the war 

 has taught us to rely upon our own re- 

 sources, and this in my case has proven 

 an advantage. I have in my collection a 

 number of species of the smaller fishes 

 which I keep in separate tanks, each 

 heated individually. Until last year I 

 have used the "Thermocon," a blown- 

 glass tank with a glass bulb in the centre 

 of the bottom, which answers very well. 

 Requiring additional tanks, and the one 

 mentioned being no longer obtainable, I 

 decided to make some on the same prin- 

 ciple. As others may feel disposed to 

 follow my example, in addition to a de- 

 scription, I present a drawing giving 



construction details and a photograph 

 showing how inconspicuous the "heating 

 glass" appears when the tank is equipped. 



My tanks measure 15 by 10, by 10 

 inches, and are constructed of galvanized 

 sheet iron. This is a handy size, and 

 best suited to my needs, but can be varied 

 as desired. 



The "heating glass" is an ordinary 

 drinking glass, measuring two and three- 

 fourths inches in diameter and three and 

 one-half high. 



Now for the frame, bottom first. Cut 

 a piece of the sheet metal 17 by 12 inches, 

 draw lines an inch from the edge on all 

 sides, snip the square inch from each 



