LIST OF ILLUSTRATIONS Concluded 



FACING PAGE 



PLATE XXIII. Plum blossoms . . .155 

 PLATE XXIV. Sumac in blossom. Blossom 



of mountain maple . . . .184 

 PLATE XXV. Fig. 1. Vertical longitudinal 

 section of the body of a larva of an 

 insect. Fig. 2. Section of the body-wall 

 of insect. Fig. 3. Head of a bee and 

 its appendages. Fig. 4. Glands of a 

 honey-bee. Fig. 5. The wax plates . 185 

 PLATE XXVI. (a) The reproductive organs 

 of the honey-bee. (6) Fig. 1. The 

 internal anatomy of the honey-bee. 

 Fig. 2. The respiratory system of the 



honey-bee . 192 



PLATE XXVII. An old-fashioned apiary . 193 

 PLATE XXVIII. (a) Thorn-apple blossoms. 



(&) Wild crab-apple blossoms . .198 

 PLATE XXIX. Buckwheat in blossom . .199 

 PLATE XXX. Box-elder, staminate and pis- 

 tillate flowers . . . . .210 

 PLATE XXXI. Blossoms of black locust , 211 



