CONTENTS. 



TJ. 8. Department of Agriculture— GovAdi. I U. S. Department of Agriculture— Contd. 



Bureau of Soils— Continued. Page. 



Field Operations, 1914— Con. 



Soil Siurvey of Pettis 

 County, iVIo., H. H. 

 Krusekopf and R. F. 

 Rogers 422 



Soil Survey of Chautau- 

 qua County, N. Y., 

 T. M. Morrison, C. C. 

 Engle, and G. L. Fuller. 423 



Soil Siuvey of Lincoln 

 County, N. C, R. T. A. 

 Burke and L. L. Brink- 

 ley 423 



Field Operations, 1915 — 



Soil Sm-vey of Jefferson 

 Davis County, Miss., 

 T. M. Bushnell and L. 

 V.Davis 422 



Soil Survey of Turner 

 County, Ga., E. C. Hall 

 andD. D.Long 421 



Weather Bureau: 



Mo. Weather Rev., vol. 44, 

 Nos. 3-4, Mar. -Apr., 1916.. 

 Scientific Contributions: « 



Note on American Charlock 

 Oil, H. S. Bailey and L. B. 

 Burnett 



Cyanogenesis in Plants. Stud- 

 ies on Tridens flavus (Tall 

 Red Top), A. A^iehoever, C. 

 0. Johns, and C. L. Alsberg. 



Separation of Hydrocyanic 

 Acid from Plant Tissues and 

 Its Disappearance During 

 Maceration, C. L. Alsberg 

 and 0. F. Black 



419 



412 



413 



413 



Scientific Contributions — Con. Page. 



Determination of Tartaric 

 Acid, B. G. Hartmann, J. 

 R. Eoff, and M.J. Ingle.... 417 



Pamburus, a New Genus Re- 

 lated to Citrus, from India, 

 W. T. Swingle.*. _. . 449 



Improving the Commercial 

 Belladonna Crop through 

 Selection, A. F. Sievers 449 



The Forests of Mount Rainier 



National Park, G. F. Allen. 451 



Hybrid Trees, W. H. Lamb.. 451 



Seed Testing with the Jacob- 

 sen Germinating Appa- 

 ratus, trans, by J. A. Larsen. 452 



An Improved Form of Nur- 

 sery Seed Bed Frame, D. R. 

 Brewster 452 



Spot Diseases of the Apple 

 Causing Much Confusion, 

 C. Brooks and D. F. Fisher. 456 



A New Bat from Porto Rico, 



H. H. T. Jackson 460 



[A List of Parasites of Animals 

 in Guam], B. H. Ransom .. 460 



A Preliminary List of the Jas- 

 soidea of Missouri, E. H. 

 Gibson and E. S. Cogan 463 



The Insect Vector of Uta, a 

 Peruvian Disease, C. H. T. 

 Towusend 464 



Value of the Seven-day Test, 

 T.E.Woodward 481 



The Preparation and Use of 

 Antirinderpest Serum, A. 

 R.Ward 487 



Water Problem Simplified, W. 



A. Etherton 496 



a Printed in scientific and technical publications outside the Department. 



