24 AGRICULTURAL 



The data have been taken from the dairy records and the 



butter calculated from the monthly fat tests by the standard 



formula butter equals 1 plus J fat instead of the actual churned 



butter, as the latter would involve corrections for milk and 



cream sold and fed to calves. 



Charles Wm. Burkett, 



Agriculturist. 



DEPARTMENT OF ENTOMOLOGY. 



The work of the department of entomology during the past 

 year has continued along the lines previously laid down. It 

 has included special studies of a considerable number of injuri- 

 ous insects, notably the American Tent Caterpillar, the Forest 

 Tent Caterpillar, the Cherry Twig-Tyer, the Birch Leaf Cater- 

 pillar, and certain species of plant lice. The study of the rela- 

 tions of birds to agriculture has also been continued, special 

 studies having been made of the food of the Myrtle Warbler 

 and the Euffed Grouse. 



Much progress has been made in the collection of New Hamp- 

 shire insects, nearly ten thousand specimens having been added 

 during the year. Special field trips for collecting purposes 

 have been made to the western and central parts of the state, 

 and the region of the White Mountains. A large number of 

 photographs for purposes of illustration have also been taken. 

 Two bulletins have been issued by the department during the 

 year: ^'The Insect Eecord for 1899," in January, and a second 

 report on "The Forest Tent Caterpillar" in May. The Insect 

 Eecord for this year will be issued as a bulletin at an early date. 



All of the entomological work has been benefited by the 

 efficient services of the assistant entomologist, Mr. W. F. Fiske, 

 who has also prepared at my request the article on the "Butter- 

 flies of New Hampshire/' that is published as a supplement to 

 this year's report. Mention should also be made of the help 

 rendered by Mr. Ned Dearborn in the studies of the food of 

 birds, and by Mr. E. A. Cushman in the miscellaneous work of 



the department. 



Clarence M. Weed, 



Entomoloqist. 



