ANNUAL REPORT, 1931 247 



PUBLICATIONS 

 Bulletins 



270 Meteorological Records — A Fort y-Year Summary, 1889-1928. C. I. Gunness. 

 20 pp. December, 1930. 



T}iis is a monthly summary of records kept at this institution since the work was started 

 in 1889. The position of the observatory is given, with enough information about the in- 

 struments used to enable the reader to interpret the records. 



271 Annual Report for the Fiscal Year Ending November 30, 1930. 64 pp. 

 February, 1931. 



The main purpose of this report is to provide an opportunity for presenting, in published 

 f j/^ form, recent results from experimentation in fields or on projects where progress has not been 

 '^ such as to justify the general and definite conclusions necessary to meet the requirements of 



bulletin or journal. 



272 E.xperiments with Hedges. Frank A. Waugh. 24 pp. March, 1931. 



Hedges are coming back into fashion. They always were both useful and beautiful when 

 properly placed and well kept. They serve as boundaries on property lines, as enclosures 

 to gardens, as windbreaks, and for privacy in the home grounds. Many species of trees and 

 shrubs will make good hedges under suitable management. This fact gives range for critical 

 choice of materials. The Department of Landscape Architecture, Massachusetts State 

 College, has maintained a demonstration and experimental garden for testing hedges for 

 ten years, and this bulletin is a report of that work. 



273 Infectious Trachitis. Charles S. Gibbs. 32 pp. April, 1931. 



Infectious trachitis has been the cause of heavy losses to the poultry industry in the 

 State of Massachusetts. Evidences are apparent that these losses are increasing, and there 

 is a pronounced interest in methods of prevention and control. This study of the disease, 

 its symptoms, pathology and mode of transmission, was undertaken to furnish a basis for 

 procedure in perfecting control methods. (Technical). 



274 The Identification of Apple Varieties from Non-Bearing Trees. J. K. 

 Shaw and A. P. French. 32 pp. April, 1931. 



Much of the disappointment and financial loss caused by planting misnamed trees could 

 be avoided if varieties were known as young trees in the nursery, or even if misnamed trees 

 were detected soon after planting in the orchard. Varieties of apples can be recognized by 

 tree and leaf characters as easily and surely as by the characters of the fruit. This bulletin 

 discusses and illustrates some of these characters. 



275 Planning the Farm Business on Three Dairy-Fruit Farms in Massachusetts. 

 R. L. Mighell. 28 pp. June, 1931. 



Farm adjustments made by individual farmers often serve as valuable guides to others 

 in similar situations. This study presents an analysis of some common types of problems 

 for which solutions have been found to fit in these particular cases. Exactly the same ad- 

 justments might not fit other farms. They may, however, serve as suggestions to other 

 farmers in like situations. 



276 Increasing Soil Acidity as a Means of Controlling Black Root-Rot of To- 

 bacco. WDliam L. Doran.. 30 pp June, 1931. 



Soil with a pH value of about 5.9 or higher are favorable to the growth of the fungus 

 which causes black root-rot and are therefore unsafe for tobacco. The primary object of the 

 work here described was to study means of lowering the pH value of soil infested with Thielavia 

 basicola, and thereby decreasing the loss caused by black root-rot of tobacco. 



277 Flower Pot Composition and Its Effect on Plant Growth. Linus H. Jones. 



16 pp. October, 1931. 



The ordinary flower pot of fired clay has been the standard plant container for many 

 years. In recent years, however, flower pots of other materials have come on the market; 

 and of these, paper pots have received most consideration because of their economic advan- 



