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Poisers . . . . .56 



Wing bridles . . ib. 



Clothing of wings . . . ib. 

 MEMBERS OF THE ABDOMEN. 



Tail tuft . . . .57 



Tail tweezers .* . . ib. 



Ovipositors . . . .58 



Sting . /; -'V . . ib. 



Cleaning instrument . . ib. 



INTERNAL ORGANS OF INSECTS. 



The order in which these may be taken . 59 

 ORGANS OF DIGESTION. 



Length of the organs in various insects . ib. 



Their three layers . . ib. 



Thehaus . . 60 



Fountains of the mouth . . . ib. 



Silk organs ;'.;.* is; . . . ib. 



Division of the organs into six parts . . ib. 



The gullet and its nervous ring . . 62 



The crop or craw , ^j . ib. 



Honey bag of bees and butterflies . . ib. 



The gizzard ' .. ' . . ib. 



Mistake of Swammerdam and Cuvier . ib. 



The stomach . . 63 



Bile vessels . . . . ^ ib. 



Gastric vessels . . . 64 



Outlet of the stomach . . ib. 



Intestines . .. . ib. 

 The chyle gut .... ib. 



The small gut and its functions . . . ib. 



The blind gut . . . ib. 



