QUESTIONS. 349 



skin ? Describe the metamorphosis from the worm to the chrysalis. 

 How do different varieties prepare for the change ? What is the gen- 

 eral appearance of the chrysalis ? What is the derivation of the 

 name ? 



(P. 159.) What are the three periods in the life of Winged Insects ? 

 Give the characteristics of the worm, or larva ; of the nymph, or 

 chrysalis ; of the winged insect. What is the nature of the internal 

 changes during these transformations? 



(P. 161.) What is the nature of the metamorphosis in Insects that 

 have only two stages of existence ? What is there remarkable in the 

 transformations of the Spider-fly ? Describe the metamorphoses of the 

 Crane-fly. What is the cause of the formation of galls ? Describe 

 the process and the result. What remarkable departure from the 

 general order of nature, in respect to the embryo in the egg, was ob- 

 served by Mr. Folks? What curious device for suspending their 

 chrysalis is observable in some caterpillars ? 



(P. 163.) How do the Silkworm and all Moths prepare for their trans- 

 formation into the chrysalis state ? Describe the Silkworm's movement 

 in spinning his cod or cocoon. What is the work of the Keel-boat 

 Caterpillar ? What is said of the Insects that live in fruits ? What are 

 the author's views of the progress of metamorphoses ? What discovery 

 of Reaumur on this point? How may the transformations of Insects 

 be regarded ? 



(P. 165.) What is said of transformations in the vegetable kingdom ? 

 What is said of changes produced by removals and culture ? Are 

 there also metamorphoses in the mineral kingdom ? What is the result 

 of this universal system of transformation and change, as it respects 

 the elements of nature ? 



(P. 167.) What is said of the intentions of nature in changing 

 forms, in the animal world ? in the vegetable world ? How is the 

 happiness of animated nature increased by these unceasing changes ? 



CHAPTER VIII. 



OF THE HABITATIONS OF ANIMALS. 



(P. 168.) What is the difference between the human species and 

 other animals, in respect to their habitations ? What is said of the 

 refuges of many Quadrupeds ? of the habitations of others ? Give a 

 description of the habitation, the work, and provident care of the Alpine 

 Marmot. Describe the operations of the Beaver, in constructing the 

 dam. (P. 172.) How do they proceed in the formation of their cabins ? 



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