OR, MANUAI, OF THB APIARY. 



391 



within the hollows are the lice, which secrete an abundant 

 sweet that often attracts the bees to a feast of fat things, as 

 the gall is torn apart, or cracks open, so that the sweet exudes. 

 This sweet is anything but disagreeable, and may not be un- 



FiG. 197. 



J V 



Female. Male. 



Sycamore Plant-Louse, much enlarged. — Origbial. 



Fig. 198. 



Female. Male. 



Apple- Tree Aphis J mnch ynagtdjied. — Original. 



wholesome to the bees. The larch-louse, L,achnus laricis, 

 secretes a liquid that is greedily taken by the bees. The honey 

 is very excellent. 

 • Another of the aphides, of a black hue, works on the 



