CONTENTS. 



LETTER I. 



Page 



Introductory _-_-_- 37 — 46 



LETTER IL 



Objections answered . . _ _ . 47 — qq 



That Entomology is a trifling pursuit - - - - 47 



That Entomologists confine themselves chiefly to nomenclature - 57 



That it leads to cruelty - - - - » - 64 



LETTER IIL 



Metamorphoses of Insects ----- 67 — 77 



States of Insects (egg, larva, &c.) - - - - 69 



(Orders of Insects) ----- 70 



Theory of Metamorphoses ----- 71 



Object of Metamorphoses - - _ - - 76 



LETTER IV. 



Direct Injuries caused by Insects (affecting Man personally) - 78 — 112 



1. Insects ivhich make man their food - - - - 79 — 99 



Pediculus humanus, &c. - - - - 79 



Acari ------ 82 



LarvcB ------ 87 



Fleas ...-.-- 88 



Chigoes ------ 89 



Harvest Bugs, Ticks, &c. - - - - 90 



Bed Bugs, &c. - - - - - 91 



(Insects giving an electrical shock) - - - 92 



Horse Fhes, &c. - - - - - 93 



Mosquitoes, &c. _ . - _ - 94 



2. Insects which attack man from revenge or fear - - - 99 — 103 



Bees, Wasps, &c. -_.-,. 99 



Ants -...-- 100 



Scorpions ------ 101 



Centipedes, Tarentula, &c. . . - - 102 



2 



