when it rejoined the College in 1948. 

 He recommended using a combina- 

 tion of herbicide and fertilization for 

 weed control in pastures, and cultiva- 

 tion supplemented by an herbicide for 

 cropland. Later he initiated a taxo- 

 nomic study of blueberries in the state, 

 and another on the flora of New Hamp- 

 shire with emphasis on woody plants. 



S. Dunn, plant physiologist, in- 

 vestigated methods of propagating 

 woody plants, one of the plants being 

 high sugar-producing types of sugar 

 maples. He and W. H. Lyford, a 

 U.S.D.A. soil scientist, initiated stud- 

 ies of the influence of soil texture on 

 plant growth and, with his graduate 

 students, Dunn evaluated wood 

 wastes, sewage sludge and other mate- 

 rials as compost for soil improvement. 



In 1 944 Mr. and Mrs. C. W. Willson 

 of Farmington, N.H. donated an her- 

 barium consisting of 584 specimens, 

 mostly flowering plants, to the Uni- 

 versity in honor of their son Charles 

 killed in action aboard the aircraft 

 carrier Lexington in the Battle of the 

 Coral Sea in WW II. 



Entomology 



The war emergency set the pattern for 

 research in Entomology during the 

 early 1940s. W. C. O'Kane, J. G. Conklin 

 and others studied toxicity of synthetic 

 organic contact insecticides and ovi- 

 cides in liquid and dust form hoping 

 that some of these compounds could 

 replace scarce imported supplies of 

 pyrethrum grown in Africa. Basic re- 

 search on DDT and its application to 

 insect control on potatoes and fruits 

 was intensive. The mosquito species 

 Anopheles quadrimaculatus, the 

 principal vector of malaria in the East, 

 was found breeding in large numbers 

 in areas around Portsmouth and 

 Durham — information of interest to 

 the military authorities. Because in- 



sect resistance against the newer in- 

 secticides was developing, R. L. Blickle 

 searched for chemical compounds 

 (synergists] which when added in 

 small amounts to the older, well- 

 known insecticides would improve 

 their effectiveness. O'Kane retired in 

 1947 after some 39 years of service to 

 the institution. In 1953 he wrote a 

 book on the Hopi Indians. Twenty 

 years later he died at the age of 96. 

 Conklin followed O'Kane as head of 

 the department. 



In 1944, the late S. A. Shaw do- 

 nated to the Experiment Station a col- 

 lection of insects totalling 4,389 speci- 

 mens. The collection consisted largely 

 oWiptera (two-winged flies) and some 

 400 specimens of Hymenoptera, pre- 

 dominantly wasps. This valuable la- 

 belled collection has been very useful 

 to the department and of great interest 

 to other collectors. 



Forestry 



Research in Forestry covered a variety 

 of areas during this period. Based upon 

 detailed study of farms in the area, J. 

 M. Chandler concluded that by mak- 

 ing adjustments in the organization of 

 the dairy-potato farm, including man- 

 aging woodlands, many farms in Coos 

 County could increase farm income. 

 L. C. Swain investigated the devices 

 and implements used in farm logging 

 and indicated how with proper use the 

 efficiency and safety of the operation 

 could be improved. He also suggested 

 that killing of unwanted forest trees 

 could be accomplished economically 

 by girdling and by use of chemicals, 

 and the resulting products used for 

 fence posts. C. L. Stevens made obser- 

 vations on individual tree variation in 

 yield of sap and syrup in maples. He 

 and R. Eggert (Horticulture) concluded 

 from a detailed study that the flow of 

 maple sap in early spring is primarily 



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