T II E 



AQUARIUM 



# 



Useful Receipts 



{Continued from Paqc Oy) 



ment; 2 ozs. resin, boiled oil and putty. 



Those who are interested in fish-food 

 will find the following a good one, and 

 one which is not only greedily devoured 

 by both native and foreign fish, but 

 which also keeps them always in good 

 condition. 



First mix and pulverize all the in- 

 gredients, then mix just like dough; if 

 after adding the eggs, the dough is too 

 stiff, add water or, better, milk. Then 

 bake in a pan like bread; as soon as 

 well done and cold, break into pieces, 

 next, after drying, grind through an 

 ordinary coffee mill. The food will then 

 be in the shape of fine granulated sugar, 

 and should be put in boxes and kept 

 free from moisture. 



10 ozs. pea flour; 8 ozs. rice flour; 4 

 ozs. shredded codfish; 4 ozs. Pratt's 

 dog-biscuit; 34 oz. table salt; }4, oz. 

 Epsom salts; V4 oz. plaster Paris; 4 ozs. 

 herring roe; 4 eggs and 4 ozs. water 

 (well beaten together); G ozs. oatmeal; 

 3 ozs. lean beef, chopped very fine. 

 Dissolve the salts in the water and eggs. 



In New York City, grocers keep her- 

 ring roe the year round. It sells for S 

 cents per pound can. It is a very valu- 

 able food, especially in the breeding 

 season. 



The Aquarium 



For the benefit of those who have oc- 

 casion to write to The Aquarium we 

 request that the following divisions of 

 work be noted : 



Any matters pertaining to editorials, 

 articles for publication, society notices, 

 or on subjects that have already ap- 

 peared in this publication should be di- 



rected to J. W. Gage, Editor-in-Chief, 

 xVo. S South Dearborn St., Chicago. 



Requests for sample copies, inquiries 

 regarding purchase of fish or supplies, 

 advertising rates and all matters per- 

 taining to extension work should be di- 

 rected to Mr. I. J. Ackerman, T.usiness 

 Manager, GlOO Ingleside Ave., Chicago. 



Remittances of all kinds, whether for 

 subscriptions or advertisements, which 

 latter should be sent promptly, should 

 be made to Mr. Floyd Young, Treasurer, 

 428 W. GGth St., Chicago. 



Complaints concerning non-receipt of 

 magazine, changes of address, and all 

 matters connected with the distribution 

 of this publication should be forwarded 

 to Mr. W. B. Hofifman, Circulation Mgr., 

 2.")3 Sibley St., Hammond, Ind. 



COMMENTS AND QUERIES 



Is it possible to prepare artificial sea 

 water?— I. H. B. 



According to a recent issue of the 

 Bulletin of The New York Zoological 

 Society, sea water can be easily prepared 

 at a trifling cost by the following for- 

 mula: Chloride of sodium (common table 

 salt), 81 parts; chloride of potassium, 2 

 parts; chloride of magnesia, 10 parts; 

 sulphate of magnesia (Epsom salts),, 7 

 parts; total 100 parts. A pound of this 

 mixture is sufficient to make about 

 three gallons of artificial sea water. 

 This should be filtered before use in the 

 aquarium. Fresh water must be added 

 in small quantities to replace loss by 

 evaporation. The addition of sea water 

 would eventually cause the salinity to 

 become too great, inasmuch as the salts 

 do not evaporate. 



If you have a slight leakage in your 

 tank, try painting over the cement (on 

 the inside, of course) with asphaltum 

 varnish. 



C. G. B. SCHENK. 



