NATURE-STUDY LESSONS. 45 



XIV.-THE FROG. 



A shaded corner of the school-yard may be provided with a shallow 

 water-tight box or a tin dish, sunk to the level of the surrounding ground, 

 a few stones and some loose pieces of sod. This will serve as a temporary 

 home for a few frogs while you are studying their characteristics. When 

 possible observe frogs in the neighborhood of ponds, pools and ditches. A 

 frog may be conveniently kept in a two-quart gem-jar with a wire top. A 

 half-cup of water, frequently changed, should be kept in the jar. 



A. Its Food. 



1. («) Discover the kind of food relished by the frog. 



(3) Try worms, grubs, flies, bread, meat, etc. 



A bit of fresh, lean meat may be pushed down its throat if one cannot get 

 living flies, etc. 



2. Observe how it uses its tongue. 



B. Its Movements. 



3. (a) Notice how the frog sits when at rest 

 (d) Draw it in this position. 



4. (a) When on land how does it move from place to 



place ? 

 (l>) What particular feature of its structure fits it 

 for this kind of movement? 



5. (a) Observe a frog swimming. 



(<^) Draw one in the act of swimming, when the hind 

 legs are fully extended. 



(c) Note the peculiarities of structure that fit the 



frog for swimming. 



C. Its Breathing. 



6. (a) While the frog is at rest, observe its throat, 



nostrils and the sides of its body. 



(d) What process is indicated by these actions ? 



