62 Department of Entomology. 



(c) A study of the life-history and habits of certain minor pests of 

 the arbor vitae and the hemlock. 



(d) A study of a new leaf-miner of the plum, the leaf-miner of the 

 dewberry, and the red bug of the apple. 



Extension Work. 



The extension work has consisted of an extensive correspondence 

 regarding injurious insects, a few co-operative experiments with 

 farmers in spraying, and attendance at fairs with exhibits of injurious 

 insects. J. H. COMSTOCK, 



Professor of Entomology. 



