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wood, shallow, and supplied with plenty of water plants, a ffev\^ fresh- 

 water clams or mussels to keep the water in circulation, and a small 

 quantity of dog biscuit or chopped fresh meat if needed when the tad- 

 poles are half grown. Care must be taken not to supply more meat 

 than they will devour, since otherwise the water may become fouled. 

 Such an aquarium makes an object of unfailing interest in the school- 

 room cr home, and by summer will yield hundreds of small toads for 

 colonizing gardens and farms. The value of such a study to the chil- 

 dren can not be overestimated. 



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o 



