ANNUAL REPORT, 1939 99 



dispose of, and the consumer is assured of a regular supply of good 

 milk. The transportation phase seems to be the only part which might 

 be more efficiently organized, but this would involve government control 

 which might prove less desirable than the condition it seeks to remedy. 



367 Meteorological Records: A Fifty- Year Summary, 1889-1938. By C. I. 

 Gunness. 23 pp. December 1939. 



A summary by months of barometer readings, temperature and hu- 

 midity, cloudiness and sunshine, precipitation and snowfall, and wind 

 movement for the fifty years that records have been kept at the College. 

 The hurricane of September 21, 1938, was the outstanding storm during 

 this period, and details of the weather on that day are given, with a chart 

 showing the behavior of barometric pressure and wind velocity. 



368 Cephalosporium Elm Wilt in Massachusetts. By Malcolm A. McKenzie 

 and Eunice M. Johnson. 24 pp. December 1939. 



This disease is rather widespread in Massachusetts and has been the 

 subject of field and laboratory investigations over a period of several 

 years. The macroscopic symptoms are similar to those of the Dutch 

 elm disease, and the fungus which causes the disease is believed to be 

 widely distributed throughout the United States. Affected trees may 

 be progressively weakened and killed, although some trees have apparently 

 recovered and some trees growing in favorable locations seem to be free 

 from symptoms although they do harbor the fungus. Under greenhouse 

 conditions the progress of the disease appeared to be limited in trees 

 infected with a second wilt-inducing fungus, Verticilliiim sp., in addition 

 to Cephalosporium sp., since trees infected with both of these fungi did 

 not die back so rapidly as trees infected with either one of the fungi 

 alone. 



Control Bulletins 



98 Nineteenth Annual Report on Eradication of Pullorum Disease in Massa- 

 chusetts. By the Poultry Disease Control Laboratory. 12 pp. June 1939. 



99 Inspection of Commercial Feedstuffs. By Philip H. Smith. 69 pp. Nov- 

 ember 1939. 



100 Inspection of Commercial Fertilizers. By H. D. Haskins. 50 pp. Decem- 

 ber 1939. 



101 Inspection of Agricultural Lime Products. By H. D. Haskins. 10 pp. 

 December 1939. 



102 Seed Inspection. By F. A. McLaughlin. 104 pp. December 1939. 



Meteorological Bulletins 



601-612, inclusive. Monthly reports giving daily weather records, together with 

 monthly and annual summaries. By C. I. Gunness. 4 pp. each. 



Reports of Investigations in Journals 



Numbered Contributions 



305 Cranberry juice— properties and manufacture. By C. C. Rice, C. R. 



Fellers and J. A. Clague. Fruit Produce Jour. 18(7):197-200. 1939. 



The juice of the cranberry is well flavored, tart, and attractively colored, 

 and when properly sweetened it makes a very desirable drink. Two 

 methods of expressing the juice are described — heat extraction and cold 

 pressing — and directions are given for making various beverages and 

 syrups. Cranberries and the freshly expressed juice are excellent sources 

 of vitamin C, but some of the vitamin is lost in the manufacturing proc- 

 esses and in storage. 

 309 Larval development of the native elm bark beetle, Hylurgopinus rufipes 

 (Eich.), in Massachusetts. By W. B. Becker. Jour. Econ. Ent. 32 (1): 

 112-121. 1939. 



A study of native elm bark beetles, collected weekly from logs cut from 

 a single American elm and stored in a shaded location, indicates that five 

 stadia occur most commonly, that there was some overlapping in size 

 of successive instars in some cases, and that a difference in size distribution 

 due to sex began to be noticeable in the last two instars. 



