40 EXPERIMENT STATION BULLETIN 351 



Insect Record 



Work on this project has continued in a manner similar to that of 

 previous years. 



Field observations on the European spruce sa\\'fl\' indicated a still 

 further decrease in infestation as compared with 1941. Only in the Pitts- 

 burg area was it possible to collect cocoons in numbers, and even there 

 no apparent defoliation took place in 1942. 



Because of the importance of mosquitoes in areas in and around mili- 

 tary establishments, an effort has been made to determine where breed- 

 ing areas occur, with particular reference to disease vectors. The de- 

 partment is cooperating with military authorities in this work. During 

 the summer of 1942 Anopheles qiictdrimaciilatiis, the principal vector of 

 malaria in the East, was found breeding in moderate numbers at one site 

 within the coastal defense area near Portsmouth. Prolific breeding of this 

 species was observed in Durham, within easy flight range of military bar- 

 racks. Anopheles n^alkeri was collected for the first time in New Hamp- 

 shire in 1942. The relation of this species to transmission of malaria is not 

 well known, although naturally infected specimens have been reported in 

 the literature. 



Survey work on mosquitoes is being continued. 



J. G. (JONKLIN 



ORNAMENTALS 



Flower Variety Trials 



1 . Carnation 



Production records were kept on eleven standard \'arieties and three 

 New Hampshire seedlings. Plants were benched from flats in early June 

 1942, and grown indoors during the entire period. Production for these 

 varieties has been carefully measured and recorded and notes made with 

 respect to selected characteristics such as quality of bloom, color, length 

 of stem, keeping quality, splitting habits, and season of production. 



Nine newer varieties were under observation during the 1942-43 sea- 

 son and notes made for each similar to those for the standard varieties. 

 Thirteen new varieties plus the most promising from the 1 942 season con- 

 stitute the trials for 1943-44. 



2. Snapdragon 



Records have been kept on two-year production of the newer snap- 

 dragon varieties under different soil treatments. The treatments were 

 designed to determine the comparative value of new compost versus old 

 greenhouse soil and to determine the effect on quality of flowers and total 

 production when additional manure, or cinders, or both, are incorporated 

 in the soil. Although another year is needed for final conclusions, the 

 following seem likely as a result of current observations: 



1. The addition of small amounts of cinders improved quality and 

 total production. The addition of one bushel of washed cinders to plots 

 of 23 square feet increased production of No. 1 blooms by 47, or 13 per 

 gent over comparable plots not having this additional aeration. 



