96 MASS. EXPERIMENT STATION BULLETIN 347 



345 Woody Plants for New England Ciardens, Parks and Roadsides. By George 

 Graves. 84 pp. August, 1937. 



This is an attempt to evaluate hardy woody plant materials and to summarize expert 

 opinions regarding their adaptability for landscape planting in New England. So far as 

 possible the general idea of evaluation without attempt at dogmatic standardization has 

 been followed through, The plants have been considered for their habit, garden aspect, 

 and cultural behavior, and the resulting data brought into a single treatment. 



346 Nitrogenous Fertilizers for Growing Tobacco. By A. B. Beaumont and 

 M. E. Snell. 15 pp. October, 1937. 



In the many years that tobacco has been grown in the Connecticut Valley, certain 

 fertilizer practices have come into use. This study was undertaken to provide a research 

 basis for those practices which are considered sound. The study included experiments 

 on quantity and form of nitrogen, ratio of organic to inorganic nitrogen, and method of 

 applying fertilizer. The results indicate that a comparatively high rate of application of 

 fertilizer nitrogen is necessary for growing Havana Seed tobacco of high yield and quality, 

 and that no mor than one half and probably as little as one fourth of the nitrogen need 

 come from organic carriers such as cottonseed meal. 



Control Bulletins 



88 Seventeenth Annual Report on Eradication of Pullorum Disease in Massa- 

 chusetts. By the Poultry Disease Control Laboratory. 11 pp. June, 1937. 



89 Inspection of Commercial Feedstuffs. Bv Philip II. Smith. 57 pp. Novem- 

 ber, 1937. 



90 Inspection of Commercial Fertilizers. By H. D. Haskins. 48 pp. Novem- 

 ber, 1937. 



91 Inspection of Agricultural Lime Products. By H. D. Haskins. 9 pp. Decem- 

 ber, 1937. 



Meteorological Bulletins 



577-588, inclusive. Monthly reports giving daily weather records, together with 

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



Reports of Investigation in Journals 



242 Acid production by the Escherichia -Aerobacter group of bacteria as in^ 

 dlcated by dissolved metallic iron. A. V. Syrocki, James E. Fuller and 

 Ralph L. France. Jour. Bact. 33 (2):185-192. 1937. 



A preliminary report of a method which it is hoped may be developed as a means of 

 differentiating Escherichia-Aerogenes bacteria, and especially intermediates of the group, 

 on the basis of their acid production from carbohydrates. When employed with pure 

 cultures, the procedure made possible satisfactory differentiation of E. colt irom A.aerog- 

 enes and from intermediates of th? group, but differentiation of other members of the 

 group from each other was not accomplished. 



249 Salmonella infections in chickens. H. Van Roekel and K. L. Bullis. Jour. 

 Amer. Vet. Med. Assoc. 91 (n.s. 44):48-58. 1937. 



Pullorum disease is the most widespread f the poultry diseases caused by members 

 of the Salmonella genus, and a leading cause of economic loss to the poultry industry. 

 Data presented show that this disease and possibly other Salmonella infections can be 

 eradicated from flocks by the use of the macroscopic agglutination test along with sound 

 eradication measures. 



253 Gas content of cranberries and possible relationship of respiratory activity 

 to keeping quality. Wm. B. Esselen, Jr., and C. R. Fellers. Plant Physiol. 

 12:527-536. 1937. 



The carbon dioxide content and the carbon dioxide-oxygen ratio of cranberries vary 

 directly with the keeping quality of the fruit, the rate of respiration, and the temperature. 

 Carbon dioxide-oxygen ratios under 0.7 seem to show that the berries are fairly sound and 



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