BIBLIOGRAPHY 347 



13 1898 Recent laws against injurious insects in North America. 



' L. O. Howard. 



IS 1898, The chinch bug. F. M. Webster. 

 16* 1898 The Hessian fly in the United States H Osborn. 

 Report of Acting Entomologist, 1902. C L. Marlatt 

 Bui. 40, 1903, The distribution of the chinch bug in Minnesota. X. L,. 



Injurious insects of the year in Canada. J. Fletcher. 



46, 1904, Proceedings of the 16th annual meeting of the Association ot 



' Economic Entomologists. . f 



52 1905, Proceedings of the 17th annual meeting of the Association of 



Economic Entomologists. . ,. 



60, 1906, Proceedings of the 18th annual meeting of the Association ot 



' Economic Entomologists. 



Cir 66 1905, The joint worm. F. M. Webster. 

 ' 70 1906 The Hessian fly. F M. Webster 



85 1907, The spring gram-aphis. F. M. Webster. 



c/the United 'sites Department of Agricdfcn* C. II 



Greathouse. 



Division of Soils^ Methodg of the mech anical analysis of soils and the determi- 

 nation of the amount of moisture in soils in the field. 



5 1896 Texture of some important soil formations. 



6 1897' An electrical method of determining the moisture content of 



arable soils. M. Whitney, F. D. Gardner, etc. 

 7, 1897, An electrical method of determining the temperature of soils. 



8 1897 An electrical method^Fdetermining the soluble soil content 



' of soils. M. Whitney, T. H. Means . 



10 1897 The mechanics of soil moisture. L,. J . tiriggs. _ 



12, 1898, The electrical method of moisture determination in sods. 



Report No!' 64', 1 899 "Field operations of the Division of Soils. M. 



Whitney, T. H. Means, etc. 

 Bui 15 1899 Electrical instruments for determining the moistxire, temper 



ature and soluble salt content of soils. L. J. Briggs. 

 T? T^r>rt nf Chief of Bureau 1902. M.Whitney. 

 Bu? 22 1903 The chemistry of the soil as related to crop production. 



' M. Whitney, F. K. Cameron. 

 Division of ^^^l^fSliges for ocean transportation of the products of 



' agriculture. 



13 1898 The fertilizer industry. J.Hyde. 

 18, 1901, The course of prices of farm implements and machinery 



20, 1901, Wheat growing and general agricultural conditions .in the 

 Pacific coast region of the United States. E. b. Holmes, jr. 

 Division of Statistics: 



38, 1905, Crop export movement and po: 



Gulf coasts. Frank Andrews 

 42 1906 Russia's wheat surplus. I. M. Rubmow. 



Division of Vegetable Physiology and Pathology: r*r1eton 



Bui. 16, 1899, Cereal rust of the United States. M. A. Carleton. 



24, 1900, The basis of the improvement of American wheats. M. A. 



Carleton. 



29 1901, Plant breeding. W. M. Hays. 

 Report of Chief, 1900. B. T. Galloway. 



Farmers' Bulletins: Treatment of smuts of oats and whea t. W. T. Swingle. 

 ' 10* 1893, The Russian thistle. L. H. Dewey. 

 21*. 1894, Barnyard manure. W. H. Beal. 

 22 1895, The feeding of farm animals E W Allen. 

 44 1896, Commercial fertilizers. E. B. Voorhees 

 45* 1897 Some insects injurious to stored grain. F. H. Chittenden. 



