[2j 



spring, we have ascertained facts which promise important measures 

 for the control of this pest. Field experiments with remedies based 

 on this new knowledge will be made this summer in the southern 

 part of the State. 



(2) The life history of the corn plant louse. By field obser- 

 vations and office breeding experiments we have now cleared up the 

 winter history of this species. — a point upon which nothing has 

 heretofore been known. Similar methods will doubtless give us this 

 season the data for a full life history of this pest of the corn fields. 



(8) The life history and species of various corn cutworms. 

 By breeding experiments with the various cutworms affecting corn, 

 we expect to determine the species of these larvae, and also the 

 precise period when each ceases its destruction in the field. — a matter 

 of economic interest, because it must fix the time when replanting 

 corn destroyed by these insects will be profitable. 



(4) The life history of certain Tipulid larvae, which have this 

 year proved to be exceedingly mischievous in meadows and pastures. 

 This subject has already been brought to satisfactory conclusion. 



(5) Field and laboratory experiments for the control of the 

 ravages of the root web worm, — an insect recently discovered, which 

 has this year done great and wide-spread injury to young corn. 



(6) Orchard experiments with lime for the prevention of 

 damage to apples by the codling moth. 



(7) Field experiments in southern Illinois to test the influence 

 of various fertilizers in supporting the farm crops against the attacks 

 of the chinch bug. Other experiments for the protection of the corn 

 crop against this insect will be begun this mouth. 



(8) Elaborate studies of the contagious diseases of insects — 

 especially of the silkworm, army worm, and the various cutworms, 

 together with experiments for the artificial production of these dis- 

 eases. 



(9) Studies of the animal life of the lakes of Illinois, for 

 which we are systematically working over the large collections made 

 while we were at Nonnal, and putting the data accumulated in shape 

 for publication. 



(10) Of a different character are some personal studies of the 

 minute anatomy of blind Crustacea as compared with those having 

 the power of vision, — a study which we have here an unusual op- 

 portunity to pursue, since these eyeless forms are very abundant in 

 our subterranean waters. 



(11) Studies made by Professor Garman on the minute 

 anatomy of peculiar forms of earthworms connnon in this region. 



(12) Collections and studies of a family of leaf mites (Phy- 

 topti) injurious to vegetation, which Professor Garman is also carry- 

 ing forward. 



(18) Studies of certain families of parasitic Hymenoptera and 

 of harvestmen (Phalangida'). which Mr. Weed is making. 



(14) Miscellaneous breeding cage experiments on the life his- 



