INSECTS. 



NOTE. In New Zealand it has been found almost impossible to 

 cultivate red clover, from the fact that there are no humble-bees to 

 carry the pollen It is said, however, that the flowers are changing, 

 so that other insects can perform the work. 



According to Sir John Lubbock, the language of bees is expressed 

 by humming. " A tired bee hums on E', and therefore vibrates its 

 wings only 330 times in a second. A bee humming on A' will, on the 

 other hand, increase its vibrations to 440 per second." 



Specimens for Study. Insects, as the grasshopper, 

 should be spread as in Fig. 182, and the wings and ex- 

 terior parts studied. Fresh 

 ^^^(dUll^ specimens should then be 



FIG. 182. Grasshopper with the 

 wings of one side expanded, 

 y, forward -wing ; //, hinder- 

 wing. (After Morse.) 



FIG. 183. Insect pinned. 

 (After Morcc.) 



separated, the segments, 

 joints, mouth-parts, anten- 

 nas, etc., pasted on a card, 



numbered and labeled. The perfect insect should be 

 preserved as in Fig. 183, pinned to a section of cork and 

 glued in a covered box, a label with the name and 

 locality accompanying it. Longitudinal sections of speci- 

 mens hardened in alcohol should be made, the upper 

 portion of the integument cut off, leaving the delicate 

 hyperdermis. Lift this carefully and examine the heart, 

 ganglia, etc. The various organs should be compared 

 with Fig. no and drawn. In making collections, endeavor 

 to have all the different stages, telling the entire story 



