Teachers' Leaflet, 



613 



Toads' ef;gs in sliallozv ivater. 



Photo bv Verne Morton 



Facts for teachers. — The eggs of toads and frogs are to be found in ponds 

 either on the bottom or attached to some water weed during the months of May and 

 June. If the season is early then the eggs will be found earlier. The eggs in the 

 long strings of jelly-like substance are those of the toad, while those in the jelly- 

 like masses are those of the frog, and are usually laid in deeper water than are 

 those of the toad. When the eggs are first laid the jelly-like substance is clear and 

 the eggs imbedded in it may be seen perfectly, but after a day or two bits of dirt 

 accumulate on the jelly and the eggs become obscured. When the eggs are first laid 

 they are quite spherical, but as they begin to develop they grow longer and finally 

 a tadpole may be seen wriggling around in the jelly mass. In four or five days 

 after the eggs are laid if the conditions are favorable the tadpoles will work out of 

 the jelly mass which is their first food, and swim away in the water. 



LESSON LXV. 

 THE TADPOLES. 



Purpose. — To call the attention of the pupils to the very interesting 

 development and habits of the tadpoles. 



Material. — • The tadpoles which have just hatched from the eggs. 



Observations. — • 



(i). Can you distinguish which is the head and tail of the tadpole 

 after it has just hatched and broken from the jelly? 



(2). How docs it act at first? 



