iv CONTENTS. 



CHAPTER VI. 



MANUFACTURE OF COCHINEAL BY THE COCCUS CACTI, OR COCHI- 

 NEAL INSECT H3 



CHAPTEE VII. 



MANUFACTURE OF GUM LAC BY THE LAC INSECT . . . . 133 



CHAPTER VIII. 



MANUFACTURE OF NUT GALLS BY THE GALL INSECT . . . 143 



CHAPTER IX. 



OTHER INSECT PRODUCTIONS USEFUL TO MAN 154 



