242 



KI-KMK. \TAUY STl'DIKS 1 .N INSECT I, IKK 



These observations should be carefully written clown, 

 preceded by the field-notes. The field-notes should 

 state the location where taken, the character of the 

 water and vegetation, and the abundance or scarcity 

 of the nymphs. 



COMPLETE METAMORPHOSIS 



SWALLOWTAIL BUTTERFLY 



In the consideration of the black swallowtail butterfly, 

 several questions have been left to be answered, and it is 

 to be expected that other queries will arise in pursuit of 

 answers to: 



How many times does the caterpillar molt ? 



How manv broods of butterflies come forth in your 



/ i/ 



locality during the summer season ? 



In what positions, besides the one given, do you 

 find the eggs ? 



Place one of the caterpillars upon a pane of glass 

 on the window, and note how it endeavors to ascend 

 the pane. 



Nowhere within the realm of Xatural History are 

 biologic studies more easily conducted, or the facts ac- 

 quired more remarkable or interesting, than in the 

 study of the fascinating phases relating to life history 

 and habits. Investigations can be most practicably con- 

 ducted by establishing these caterpillars in surroundings 

 as nearly natural as possible, where they can be fre- 

 quently observed, and at times constantly watched. 



Points to be observed are: temperature, moisture, 

 proper food, and right conditions for pupation. 



Care of Larvae. - The manner of caring for the larvae 

 of the black swallowtail will apply to the rearing of 



