AMATEUR FISH CULTURE 



The adult D. marginalis itself is not a whit less 

 voracious, and much stronger than its larva. 



If the wooden parts of the apparatus have been 

 properly prepared, according to my previous in- 

 structions, there should be no risk of the fry 

 developing fungus. Quite a small spot of wood- 

 work, however, left uncovered by asphalt- varnish, 

 or enamel, or uncharred, will render the chance of 

 the development of this disease probable. 



Should by any misfortune fungus get into the 

 rearing boxes, a dose of salt may very likely cure 

 it. Sea water is the best, but if this is not obtain- 

 able, a solution of salt and water run through 

 the boxes will probably cure the disease. Con- 

 siderable good may also be done to the young 

 fish by occasionally putting a lump of rock salt 

 in at the inlet, and the water allowed to run over 

 and dissolve it. 



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