CONTENTS. 



LETTER L 



Page 



Introductory ------ 37 — 45 



LETTER IL 



•Objections answered - - - - - 47-^-66 



That Entomology is a trifling pursuit - - - - 47 



That Entomologists confine themselves chiefly to nomenclature - 57 



That it leads to cruelty ----- 64 



LETTER m. 



Metamorphoses of Insects - - - ► - 67 — 77 



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



(Orders of Insects) ----- 70 



Theory of Metamarphoses - - - - - 71 



Object of Metamorphoses ----- 76 



LETTER IV. 



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



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



Pediculus humanus, &c. - - - - 79 



Acari ------ 82 



Larva --..-. 87 



Fleas ------ 88 



Chigoes - - - - --89 



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



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



(Insects giving an electrical shock) - - - 92 



Horse Flies, &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, Tarantula, &c. - - - . 102 



2 



