2 8 4 



ANIMAL LIFE 



to pieces, devour the eggs, scatter the contents, and 

 start provisioning and stocking afresh. 



FIG. 60. Section of the burrow of Andrena, one of the Solitary Bees. 

 The main-shaft communicates with the lateral chambers in which from 

 below upwards the stages in development may be seen progressing. 

 (From ' Riverside Natural History J by kind permission of Messrs. 

 Hoitghton, Mifflin & Co., U.S.A.) 



Evolution of the Hive-bee. Among these solitary bees 

 we find the first traces of that fraternal spirit which is 

 such a dominant impulse in the social ones. The early 



