this hiiok which tliey have hfljifd tn inakc. Mr. and Mrs. .Vlt'xaii<ler (irahain 

 Bril ami Mr. Harhoiir Lathrop. 



Knowing little ahout inserts I ha\'e heen dependent n])un the kindness of 

 the entomologists of the National Mnseuni, in particnlar on Dr. ]>. (). Howard, 

 for the s:-ientifie names of the monsters, which names liave given me access 

 to what is [inhlisheil aliont them in the handbooks on entomology. 



Practically all of the negatives and joints have heen made ])y ISIr. Scott 

 Clime of the Department of Agricultnre, who took a particular interest in 

 their preparation. 



To Mr. Gilbert II. Grosvenor, Director and Editor of the Xati(inal Geo- 

 grapliic Society, is due the credit of realizing the poi)nlar interest these 

 pictures would have and who. in contrast with more timid ])ublishers, re- 

 ])rodu:'ed thirty-nine of them in the National Geographic Magazine and 

 urged the i)rei)aration of this book. 



[iM 



