46 NATURE-STUDY LESSONS. 



D. Its Home. 



7. Discover where frogs are commonly found. 



8. Observe a frog and note whether it spends the 



greater part of its time on land or in the water. 



Animals that spend part of their existence in water and part on land 

 are called amfhibians. 



9. Try to find out what becomes of frogs on the 

 approach of cold weather. 



10. What do they eat at this time ? 



Animals which pass the winter in a torpid state are said to hibernate, 



E. Its Language. 



1 1. {a) Imitate the sounds made by frogs. 



{b) During which time of the year are their sounds 



most frequently heard ? 

 {c) During which time of the day are their sounds 



most frequently heard ? 



F. Its Spawn. 



12. («) Procure a mass of frogs' eggs from a pond or 



ditch, and keep them in wide dishes of water 

 to hatch. Change the water every two or 

 three days, taking fresh water from a pond 

 or ditch, not from a well. 



{b) Describe the mass of eggs. 



if) Examine a single &%^. Describe it. Draw it. 



{d) What are the first signs of life observed in the 

 eggs? 



G. The Tadpole. 



13. {a) Describe the creature that comes out of the 



egg when it breaks. 

 (J)) How does it swim ? 

 (tf) Examine closely for gills. Describe any 



appendages you may find. 



