Teachers' Leaflet. 617 



(6). Bring a pail of water from the pond and pour it very gently in 

 at one side of the pan, so as not to disarrange the plants; till the pan 

 nearly to the brim. 



(7). After the mud has settled and the water is perfectly clear, 

 remove some of the tadpoles which have hatched in the glass aquarium 

 and place in the pond. Not more than a dozen should be put in a pan of 

 this size, as the amount of food and microscopic plants which are on the 

 stones in the mud will afiford food for only a few tadpoles. 



(8). Every week add a little more mud from the bottom of the pond 

 or another stone covered with slime, which is probably some plant growth. 

 More water from the pond should be added to replace that which has 

 evaporated. 



(9). Care should be taken that the tadpole aquarium be kept where 

 the sun will not shine directly upon it for any length of time, because if 

 the water gets too warm the tadpoles will die. 



LESSON XLVII. 

 the toad. 

 Purpose. — To make the pupils observe closely the appearance of the 

 toad, and to enable them to distinguish it from the frog. 



Material. — A toad made comfortable in a moss garden. 

 Observations. — 



(1). Describe the general color of the toad above and below. 

 (2). What is the texture of the skin above and below? 

 (3). Where was the toad found? 



(4). Does it feel warm or cold to the hand? Is it slimy or dry? 

 (5). Is it a cold-blooded animal? 



(6). Describe the eyes and explain how^ their situation is of special 

 advantage to the toad? 



(7). X^ote the shape and color of the pupil and iris. How does the 

 toad wink? 



(8). F"ind and describe the nostrils. 

 (9). Find and describe the ear. 

 (10). Note the swelling above and just back of the ear.. Has this 

 any use? 



(11). What is the shape of the toad's mouth? 

 (12). Has it any teeth? 



(13). Describe the arms and hands. How many fingers has the 

 hand? 



(14). In which way do the fingers point when the toad is sitting down? 

 (15). Describe the legs and feet. How many toes are there? 

 fi6). What is the relative length of the toes and how are they con- 

 nected ? 



