VI 



CONTENTS. 



Report of the department of poultry husbandry 

 Report of the department of chemistry, 

 Work of the research section, 

 Work of the fertilizer section, 

 Fertilizers registered. 

 Fertilizers collected and analyzed, . 

 Other activities of the fertilizer section, 

 Vegetation tests, .... 

 Feed and dairy section, 

 The feeding stuffs law, . 

 The dairy law, .... 

 Milk, cream and feeds for free examination, 

 Testing of pure bred cows for advanced registry 

 Miscellaneous work, .... 

 Numerical summary of laboratory work. 

 Report of the department of botany. 

 Report of the department of entomology, . 

 Report of the department of agricultural economics. 

 Report of the department of meteorology, 



PAGE 



48a 

 51a 

 51a 

 53a 

 54a 

 54a 

 55a 

 55a 

 56a 

 56a 

 57a 

 60a 



Part II. 



Bulletin 163. Bacillary white diarrhea (Bacterium vullorum infection) 

 young chicks in Massachusetts, 

 Purpose, ..... 



Brief history of disease. 



Establishment of methods for detecting carriers of the disease, 

 Infection in Massachusetts, .... 

 Methods used in locating and eradicating infection. 

 Methods used in examination of chicks. 

 Summary of data secured by chick autopsies, 

 The agglutination test, ..... 



Test fluid 



Methods of drawing and treating blood samples, 



Making the agglutination test, .... 



Data secured from agglutination tests. 



Distribution of infection and types of stock infected, 



Results of application of these methods for preventing and eradicating 



bacillary white diarrhea of young chicks, 



Bulletin 164. I. Substitutes for milk in rearing of dairy calves. II. The 



cost of rearing a dairy cow, 



Substitutes for milk in the rearing of dairy calves 



Introduction, ..... 



Results of experiments made at this station, 



I. Calves fed whole milk, skim milk and ordinary grains, 

 II. Calves fed Hayward's Calf Meal, 



III. Calves fed Schumacher's Calf Meal, 



IV. Calves fed Blatchford's Calf Meal, 

 V. Calves fed Bibby's Cream Equivalent, 



VI. Calf meals prepared at this station. 

 Calf meal I., . 

 Calf meal II., 

 Calf meals III. and IV. 

 Calf meal V., " . 

 Calf meal VI.. 



