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 Larva?, 223. 

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

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

 pidity of Transformation^ 227. Enormous Number of Day-Flies, 

 228. Their Usefulness, 228. Splendid Amusement with them 

 by Candle-Li yht, 228. Curious Phenomena with regard to their 

 Metamorphosis, ^28. Death of a Day-Fly and a Morning-Glory, 

 229. 



ORDER VI. VEIN- WING ED INSECTS (HYMENOPTERA). 



Character of this Order, 231 . Larva? 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 Asterirc, 238. Its 

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

 The Mud-Wasp, 241. The Hornet, 242. Its ingeniously-built 

 Nest, 242. The Pseudo-Caterpillars, 243. The Elm-Tree 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 

 Larva?, 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. 

 Murderous 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, 



