Table of Contexts. 117 



PACK. 



with an infusion of tobacco, 357. Importance of destroying il in the 

 larval stage, 257. The heavy tribute imposed by insect depredations is 

 voluntarily paid, 257. It may be succ* ssfully resisted, 257. 



Our Insect Enemies and How to Meet Them 258 



Agriculture the basis of all other industries, 258. Its importance 

 shown in our aggregate agricultural population of sixty millions of 

 persons, 258. The total value of farm products in 1886,258. Why 

 the agricultural industry should be cherished, 258. Its past rate of 

 progression will not continue in the Eastern United States, 259. Why 

 it will not be sustained, 259. Its present condition here and in the 

 West, 259. What has produced this condition, 259. An advance now 

 being made in scientific agriculture, 260. Beneficial results of Agri- 

 cultural Colleges, Experiment Stations, and Farmers' Institutes, 260. 

 Much of the labor and experse in the production of crops lost if the 

 resultant products are not secured, 2f'0. Excessive losses from insect 

 depredations in the United States. 260. Their magnitude has com- 

 pelled the study of insect pests, 261 . Progress of Economic Ento- 

 mology, 261 . What it is, 261 . The first publication under State 

 authority, 261 . Followed by reports of Fitch, Walsh, Riley, Le Baron, 

 Thomas, and Forbes, 261 . Glover's labors, 261 . Establishment of an 

 Entomological Division of the United States Department of Agricul- 

 ture, 261 . Its publications, 261 . A special Entomological Commission 

 to investigate the Rocky mountain locust, 261 . Valuable publications 

 by it, 262 . Resumption of entomological investigations by the State 

 of New York. 262. Establishment, under the "Hatch Bill," of 

 Agricultural Experiment Stations, 262. Accelerated future progress 

 promised, 262. Importance of entomological study, 262. Ridicule 

 formerly bestowed upon it, 262. Its present recognition, 263. Its 

 general prosecution, 263. ^ome considerations showing its import- 

 ance: 1. The Secrecy of Insect Depredations, 263. Extent of 

 unrecognized injuries to crops, 263. A long unknown attack on 

 clover seed, 263. A hidden Coleophora attack on fruit, 263. An 

 unknown currant-stem girdler, 264. Insect pests that work only 

 at night, 264. 2. The Small Size of Insects, 264. The paradox 

 of '"the smaller the insect the greater its capacity for harm," 264. 

 Ravages of the microscopic grapevine Phylloxera 264. Number of 

 acres of vineyards destroyed in France, 264. Appropriations made 

 for its investigation, 264. Reward for an efficient remedy. 264. 

 Insects can not be excluded from crops as domestic animals may be, 

 265. Not all insects are small, 265. Webster's definition of an insect. 

 265. Dr. Johnson's definition of, net-work, 265. The common house- 

 fly the average in size of the entire animal kingdom, 265. The vast 

 world of living beings not seen by the unaided eye, 265. 3. Number 

 of Insects, 266. Ten times more numerous than the entire animal 

 kingdom combined, 266. Ten thousand species of insects estimated in 



