CONTENTS. XV 



Page 



2. Injuries to our living vegetable property — continued. 



Grapes ------ 149 



Fruit trees generally - _ _ _ 150 



To Plantations and Groves - - - - 151 



By Beetles - - - - - 151 



Caterpillars ----- 153 



Aphides (honey -dew) - - - - 153 



Insects attacking- the interior of trees - - 154 



Insects attacking theii' bark and alburnum - - 156 



LETTER VII. 



Indirect Injuries — continued - - - - 160 — 166 



The ravages of Locusts ----- 160 — 166 



LETTER VIII. 



Indirect Injuries — concluded - - _ . ig7 — 178 



3. Injuries to our dead property , ivhcthcr animal or vegetable - - 167 — 178 



To our Food _ _ . . . i67 



Drugs _ _ - - - 169 



Clothes - - - - - 170 



Houses and furniture - . - . 171 



Timber ----- 171 



Books, Pictures, &c. - - - . 173 



Dead Stock generally - - - - 174 



LETTER IX. 



Indirect Benefits derived from Insects - - - 179 — 205 



By maintaining a due balance between vegetable and animal productions 180 



removing nuisances and deformities - - - - 181 



destroying noxious Insects - - - - 185 



serving as food for other animals - - - - 195 



promoting the fertilization of plants . - - 203 



LETTER X. 



Direct Benefits derived from Insects - - - - 206 — 226 



As serving for the food of man . _ - - 206 



As affording Medicines - - - - -213 



Dyes - - - - - 215 



Wax - - - - - 220 



Honey ----- 221 



Silk ------ 222 



LETTER XL 



Affection of Insects for their Young - . _ 227 — 250 



1 . Insects ivhich perish before their young come into cristence - - 227 — 237 



Butterflies ------ 227 



Ichneumons - _ . - - 228 



Sand Wasps, &c. - - - - - 230 



Wild Bees ------ 232 



Beetles ------ 233 



