14a P.D. 31 



No. 229. Soil Reaction and Black Root-Rot of Tobacco, by P. J. Anderson, A. 



Vincent Osmun and W. L. Doran. 

 No. 230. Research Service to Massachusetts Animal Industry: Progress Reports, 



by J. B. Lindsey, J. G. Archibald and Sidney B. Haskell. 



Bulletins, Technical Series. 

 No. 7. Broodiness in Relation to Fecundity in the Domestic Fowl, by F. A. 



Hays and Ruby Sanborn. 

 No. 8. Winter Cycle and Winter Pause in Relation to Winter and Annual Egg 



Production, by F. A. Hays and Ruby Sanborn. 

 No. 9. Annual Persistency in Relation to Winter and Annual Egg Production, 



by F. A. Hays and Ruby Sanborn. 

 No. 10. The Therapeutic Efficiency of Avian Diphtheria, Roup, and Bird Pox 



Vaccines and Bacterins, by Norman J. Pyle. 



Bulletins, Control Series. 

 No. 31. Control of Bacillary White Diarrhoea, 1924-1925, by P. E. Bransfield. 

 No. 32. Inspection of Commercial Feedstuffs (1925), by Philip H. Smith and 



Frank J. Kokoski. 

 No. 33. Inspection of Commercial Fertilizers (1925), by H. D. Haskins, L. S. 



Walker and George B. Dalrymple. 

 No. 34. Inspection of Agricultural Lime Products (1925), by H. D. Haskins, 



L. S. Walker and G. B. Dakymple. 

 No. 35. Control of Bacillary White Diarrhoea, 1925-1926, by P. E. Bransfield. 

 No. 36. Inspection of Commercial Feedstuffs (1926), by Philip H, Smith and 



Franlv J. Kokoski. 

 No. 37. Inspection of Commercial Fertilizers (1926), by H. D. Haskins, L. S. 



Walker and M. W. Goodwin. 

 No. 38. Inspection of Lune Products Used in Agriculture (1926), by H. D. 



Haskins, L. S. Walker and M. W. Goodwin. 



Meteorological Reports. 

 Nos. 433-456, inclusive. 



Scientific Contributions. 

 No. 30. The Application of Genetic Principles in Breeding Poultry for Egg 



Production, by F. A. Hays. In Poultry Sci. 4 :43-50. 1924-25. 

 No. 32. Controlling Onion Smut with Kalimat, by P. J. Anderson. In Phvto- 



pathology 14:569-574. 1924. 

 No. 33. Susceptibility of Nicotiana Species, Varieties and Hj^brids to Tobacco 



Wildfire, by P. J. Anderson. In Phytopathology 15:77-84. 1925. 

 No. 34. The Availability of Subsoil Potash, by Sidney B. Haskell. In Soil Sci. 



19:105-114. 1925. 

 No. 35. Annual Crops from Biennial Bearing Apple Trees, by Brooks D. Drain. 



In Amer. Soc. Hort. Sci. Proc. 300-302. 1924. 

 No. 36. Some Physiological Aspects of Asparagus Officinalis, by Victor A. Tied- 



jens. In Amer. Soc. Hort. Sci. Proc. 129-140. 1924. 

 No. 37. Biological Investigation of Peat, by Arao Itano. In Jour. Bact. 10:87- 



95. 1925. 

 No. 38. Some Unusual Results in Fertilizing Fruit Plants, by J. K. Shaw. In 



Amer. Soc. Hort. Sci. Proc. 281-286. 1924. 

 No. 39. Sod-Nitrate vs. Cultivation in the Apple Orchard, by J. K. Shaw. In 



Amer. Soc. Hort. Sci. Proc. 328-337. 1924. 

 No. 40. Autumn Development of Peach Fruit Buds, by J. S. Bailey. In Amer. 



Soc. Hort. Sci. Proc. 30-33. 1924. 

 No. 41. The Economics of Fertilizer Use in the United States, by Sidney B. 



Haskell. In Jour. Amer. Soc. Agron. 17:198-210. 1925. 

 No. 42. Comparative Susceptibility of Onion Varieties and of Species of Allium 



to Urocvstis Cepulae, by P. J. Anderson. In Jour. Agr. Research 



31:275-286. 1925. 

 No. 43. Inheritance of Plumage Color in the Rhode Island Red Breed of Domestic 



Fowl, by F. A. Hays. In Genetics 11 :355-371. 1926. 

 No. 44. The Digestibility and Energy Values of Feeds for Horses, by J. B. Lindsey, 



