VI CONTENTS. 



222.— The Genus Agrion, 222.— Their Eggs and Grubs, 222.— 

 How their Metamorphosis can be observed, 222. — The Water- 

 Moths, 223.— Description of them, 223.— Their Larvte, 223.— 

 Fabrication of their Swimming-Cases, 224. — The Horned Cory- 

 dalis, 225.— The Daj-Fly, 226.— Its Larva, 227.— Wonderful ra- 

 pidity of Transformation, 227. — Enormous Number of Day-FHes, 

 228. — Their Usefulness, 228. — Splendid Amusement v.ith them 

 by Candle-Light, 228. — Curious Phenomena with regard to their 

 Metamorphosis, 228. — Death of a Day-Fly and a Morning-Glorv, 

 229. 



Order VI.— VEIN-WINGED INSECTS {HYMENOPTERA). 



Character of this Order, 231. — LarvjB and their Metamorphosis, 232. 

 — Their Power of fertilizing Plants, 233. — Lady Lihatchef's 

 Green-House, 233. — The Gall- Wasps, 234. — Excrescences on 

 Plants caused by them, 235.— Of Oak-Balls and other Galls, 235. 

 — Cynips Oneratus, 236. — Cynips Seminator, 237, — Usefulness of 

 Gall-Wasps, 237.— The Ichneumon-Wasps, 237.— Their Useful- 

 ness, 237. — Pimpla Lunator, 238. — Ichneumon Asterias, 238. — Its 

 Sagacity, 240.— The Gold- Wasp, 240.— The Caterpillar-Killer, 240. 

 —The ^tud-Wasp, 241. — The Hornet, 242. — Its ingeniously-built 

 Nest, 242.— The Pseudo-Caterpillars,- 243.— The Elm-Ti-ee Saw- 

 Wasp, 244.— The Pigeon Tremex,^244.— The Ants, 246.— De- 

 scription of them, 246.~Males^ Females, and Workers, 246. — 

 Ingenious Activity of the Workers, 247. — Their intimate Friend- 

 ship with Plant-Lice, 247. — Ants are Omnivorous, 247. — Their 

 Larvae, 247.— What Use is made of, 248.— The Formic Acid, 248. 

 — Flying Columns of Ants, 249. — Their Intelligence, mutual At- 

 tachment, and Language, 250. — War between two different Spe- 

 cies, 253. — Benefits and Injuries derived from Ants, 254. — Ter- 

 rible Ravages occasioned by Ants in Africa, 255. — The Visiting 

 Ants of America, 255. — Ant-Eaters and Armadillos in South 

 America and Scaly Lizards in Asia feeding on Ants, 256. — The 

 Honey-Bee, 256. — Swammerdam and Reaumure the first Classic 

 Authors on Bees, 257. — Why Bees are the most precious Insects, 

 258. — Different Individuals of Bees in a Hive : viz., Queen, Drones, 

 and Working Bees, 260. — Comparison of a Bee-Hive with a Mon- 

 archy, 260. — Occupations of the Queen Bee, 260. — Her Immacu- 

 late Conception, 261. — How the Eggs are fecundated, 261. — 

 Different Kinds of Bee-Hives, 265. — Bees in hollow Trees, 265. — 

 Hives of Straw, 265.— Bee-Boxes, 265.— Huber's Bee-Hive, 266. 

 — Patent Hives of North America, 266. — Sylvester Davis's Plat- 

 form Bee-Hive, 266. — How the Operations* of Bees can be ob- 

 served, 267. — The laying of Eggs, 268. — Development of the Egg, 

 268. — Swarms or new Colonies of Bees, 269. — How to Hive a 

 Swarm, 269. — The Sting, its Venom and Remedies against, 271. 

 — jNIurderous Battles of the Bees, called the Massacre of the 

 Drones, 273. — Fatal Injuries done by Bees, 274. — How Wax and 

 Honey are collected, 274. — Instruments of Bees for performing 

 their Operations, 274. — Their horny Jaws, Proboscis, fore and 

 hind Legs, Fossa, 274. — Are Bees blind? 275. — Propolis and its 

 Use, 275. — The Pollen of Flowers is the real Food or Bee-Bread, 



