PROBLEMS OF FISH AND FIS]IIX(; 



:]03 



encouraged, to see who can have the most beautiful aqtiarium and th« 

 most instructive one, and iiold it longest without chang*' of wat«'r. A d««- 

 iiH lit mark is deserved, and may he given, for t-very time a ]»ui»il |»«'rmits 

 tilt' water in his aquarium to ht'eomc foul I'lioiii^li to n'(|uire chajiging. 



In this way, by gaining experience tlirou-h the year, the students 

 may keep the acpuiria running in fine balance, each with some specimen 

 of native fish,' and so afford a most instructive exhibition. This may be 

 held in connection with ai)propriate lec- 

 tures by specialists and a general discus- 

 sion of the plans which have been worked 

 out for the adeipiate stocking of local 

 waters. Whether we call it Fishes' l)av 

 or make it a feature of more general exer- 

 cises will dejtend on community interests 

 and preferences. 



A few important features of such an 

 exhil)ition may be 



1. Species of value antl relative inqior- 

 tance of each. 



2. Habits and proper hal)itats of each 

 species (so far as these can be shown Ity 

 arrangement of aquaria). 



3. Table of si)awning seasons; pre- 

 served specimens of eggs and fry : plioto- 

 graphs and other pictures of fish nests; 

 diagrams of local waters, with distribution 

 of nesting places of difi'erent species. 



4. Eggs actually being luitched (Fig. 

 142) and fry Iteing fed and reared for 

 distribution. 



5. Foods of different species, with natural food supjilies. 



6. Extermination of Mios(|iiitoes by fishes, with data from t'eeding 

 tests in the school acpiariaand from ))ark or pond waters |ir()j>erlv stcH'ked. 



7. Data of growth of different fishes, •fed in different ways. 



-S. Diagrams and records of production of home lish ponds. (Whv 

 not have fish projects and fish clui»s as well as corn elubs and pig 

 clubs?) 



0. Enemies of different fishes, and means of their control. 

 10. Fish course, composed entirely of local varieties in .season, 

 prepared by domestic-science classes for the exhibit luncheon. 



Fi«;. 14l'. Tunibk'r liatciiory 



Water runniiii; tln-i>ii<;li fumiel 



keeps eggs aerated. .Xuthor's 



tlesigu 



