vi CONTENTS. 
222.—The Genus Agrion, 222.—Their Eggs and Grubs, 222.— 
How their Metamorphosis ean be observed, 222.—The Water- 
Moths, 223.—Description of them, 223.—Their Larve, 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-Light, 228.—Curious Phenomena with regard to their 
Metamorphosis, 228.—Death of a Day-Fly and a Morning-Glory, 
229. 
Orpver VI.—VEIN-WINGED INSECTS (HYMENOPTERA). 
Character of this Order, 231.—Larve and their Metamorphosis, 282. 
— 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 Asterix, 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, 248.—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 
Larve, 247.,.—What Use is made of, 248.—The Formic Acid, 248. 
—F lying 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, 
