358 QUESTIONS. 



summer season. Where are the rocks of St. Kilda? What animal 

 frequents them ? What Fish is it with whose movements theirs seem to 

 be connected ? 



(P. 281.) What are three principal objects of migration? To what 

 kind of Birds is the phrase " Birds of passage '' applied ? Repeat what 

 is said of partial migrations. What preparations do migrating Birds 

 make ? What objection has been made to the supposition that Birds 

 migrate ? State the reply made to this objection by Dr. Fleming 

 Mention the examples given of the rapid flight of Birds. 



(P. 283.) Is migration peculiar to the feathered tribes? What is 

 eaid of the migrations of the human race ? What are the natural hab 

 its of savages ? Are any instances given of the migration of Quadru 

 peds ? What is said, in this respect, of the Bat r of the Seal ? of thr 

 Stag ? Oxen ? Sheep ? the Rat ? the Frog ? 



(P. 285.) What animals make the longest journeys in their migra- 

 tions? Describe the habits of the Salmon in this respect. How do 

 they surmount the cataracts? Mention the case described by Mr. 

 Pennant. What other Fish is mentioned as remarkable for its mi- 

 grations ? Where is the great winter rendezvous of the Herrings T 

 Describe the course of their migrations. What other migrating Fishes 

 aie mentioned ? Describe the migrations of the Land-crab. How 

 do they marshal their forces ? What do they do when alarmed with 

 danger ? 



(P. 289.) Do or do not any of the Insect tribes migrate ? What 

 examples are given ? What is said of the Bee ? of the Spider ? 

 What remarks does the author make in respect to the extent of the 

 principle of migration ? 



What is the third method, by which animals are protected from ex- 

 treme cold ? In what orders are the animals which become torpid, 

 found? To what sort of places do they retire? What effect does 

 torpidity have upon the temperature of the body ? upon the respi- 

 ration ? upon the circulation ? How do they appear when examined 

 in a state of torpidity ? How is the torpidity supposed to be produced ? 

 Describe the experiment made with the Marmot. Is it probable that 

 any Birds become torpid ? What other animals do become torpid ? 

 What are the three ways, then, by which animals are protected from 

 changes in the temperature of the seasons? 



