Vi TABLE OF CONTENTS, 



largest apple orchard in the world, 11. A peach orchard of 790 acres, 11. A 

 California vineyard of 1,010 acres, 11. A cotton plantation of 6,500 

 acres, 12. The Dalrymple farm of 36,000 acres of wheat and oats, 12. A 

 California wheat field seventeen miles long, 12. A Colorado potato field, 

 12. The increase of insect injuries may compel cultivation in smaller 

 areas, 12. 



The Immense Number of Insects 13 



Insects more numerous in species than all the other classes of animals 

 combined, 12. Rapid increase of " new species," 13. Thousands of unde- 

 scribed species in our Museums, 13. Increase in known species during 

 the last fifty years, 13. Probable number in the world, 13. The amaz- 

 ing number of individuals, 13. Estimated number of aphides upon a 

 single cherry-tree, 13. The myriads of Chironomus nivoriundus,l'3. Flights 

 of the Rocky Mountain locust, 13. The mosquito preventing cultivation 

 in the Southern States, and exploration in British America, 14. The tiny 

 insect of more importance than the beast of prey, 14. 



Necessity of a Knoavledge of Insect Habits 14 



Insects need to be scientifically named before they can be properly 

 studied, 14. Their diverse habits, 14. Their complicated life-histories, 

 14. The early stages of many of the more injurious species still unknown, 



14. Laborious nature of these studies, 15. The small number of economic 

 entomologists in the United States, 15. 



PROGRESS MADE IN ECONOMIC ENTOMOLOGY 15-25 



Progress during the last twenty years, 15. Directions in which made, 



15. Its utilization in the promotion of agriculture and the allied arts, 

 15. Its commencement in this couniry, 15. 



The Writings of Economic Entomologist;? 15 



The Harris Reports on the Insects of New England, 10. High esti- 

 mation in which they are held, 16. Their service to agriculture, 16. The 

 Fitch New York Reports, 16. The writings of B. D.Walsh, 16; the loss sus- 

 tained in his early death, 16. The publications and labors of C. V. Riley, 

 16 ; their influence, 16 ; the life-histories given, and remedies for depre- 

 dations, 17 : their value attested, and economic entomology honored by 

 a gold medal from the French Government, 17 ; notice of the medal, 17. 

 The Illinois Reports of Dr. Le Baron, 17. Reports and other publica- 

 tions of Dr Thomas and his assistants, 17. The economic contributions 

 of Dr. Packard, 17; his publications in general entomology, 18- Prof. 

 Comstock's Reports, 18. Mr. Howard's paper upon jiarasites of the 

 Goccidie, 18. Reports of Mr. Townend Glover, 18. Glover's " Illustra- 

 tions of Insects " and " Manuscript Notes from my Journal," 18. Gold 

 medal awarded to Mr. Glover, 19 ; notice relating to award, 19. Writings 

 of Prof. A. J. Cook, 19 ; of Mr. Wm. Saunders ; of other entomologists, 



19. Bibliography of publications in economic entomology in preparation, 



20. Investigations in this country recognized in Europe, and tribute 

 paid to them, 20. Appreciation of European publications, 20. Reason 

 for advanced progress of applied entomology in the United States, 20. 

 Europe greatly in advance in general entomology, 20. 



Increased Interest in Entomological Investigations.... 21 



The labors of entomologists recognized, encouraged and utilized, 21. 

 Frequent calls upon entomologists for information, 21. Inquiries and re- 

 plies through agricultural journals, 21. Aid desired by agricultural and 



