LIST OF PURLICATIONS. 



[Vol. 43 



V. 8. Department of Agriculture — Cun. 



Bureau of Plant Industry : ^^ge. 



Inventory of Seeds and 

 Plants Imported by the 

 Office of Foreign Seed and 

 Plant Introduction During 

 the Period from April 1 to 



June 30, 1916 635 



Bureau of Public Roads : 



Public Roads, vol. 8, No. 25, 



May, 1920 689, 690 



Scientific Contributions ■} 



The Diuzonietric Determina- 

 tion of Phenol, and Cer- 

 tain of its Homologs, R. M. 

 Chapin 614 



Sauerkraut Production Con- 

 trolled by Heat, with the 

 Report of an Experiment, 

 E. Le Fevre 616 



California Precipitation, A. 



H. Palmer 618 



Solid Phases Obtained by 

 the Evaporation of Certain 

 Soil Extracts, M. S. An- 

 derson and W. H. Fry 624 



The Production of Phos- 

 phoric Acid by Smelting 

 Phosphate Rock in a Fuel- 

 fed Furnace, W. H. Wag^ 

 gaman and T. B. Turley— 629 



Potash from Kelp. — II, The 

 Experimental Distillation 

 of Kelp at Low Tempera- 

 tures, G. C. Spencer 630 



Rutin, the Flavone Pigment 

 of Eschficholtzia califor- 

 nica, C. E. Sando and H. 

 H. Bartlett 632 



Guam Corn, G. Briggs 638 



Cooperation in and Coordi- 

 nation of Investigational 

 Work in Horticulture, L. 

 C. Corbett 642 



Tree Windbreaks as a Farm 



Asset, C. G. Bates 650 



The Establi.shment of a 

 Douglas Fir Forest, J. V. 

 Hofmann 650 



American Pulpwoods : The 

 Suitability of Various Spe- 

 cies of American Woods for 

 Pulp and Paper Produc- 

 tion, O. Kress, S. D. Wells, 

 and V. P. Edwardes 650 



Seed Transmission of Cucur- 

 bit Mo.saic by the Wild 

 Cucumber, S. P. Doolittle 

 and W. W. Gilbert 654 



U. S. Department of Agriculture — Con. 



Scientific Contributions — Contd. Page. 

 Studies on the Viabilitv of 

 the Potato Blackleg ' Or- 

 ganism, G. B. Ramsey 654 



Effect of Spraying on Early 

 Ripening of Tomato Fruit, 

 F. .7. Pritchard and W. B. 

 Clark 656 



Concerning Spoilage of Vege- 

 tables in Transit and 

 Storage, F. C. Meier 656 



Disea.ses of Fruit and Causes 

 of Deterioration in Transit, 

 O. F. Burger 656 



Report of the White Pine 

 Blister Rust, State of 

 Rhode Islaod. 1919, in Co- 

 operation with the U. S. 

 Department of Agriculture, 

 R. A. Sheals 658 



Description of a New Clap- 

 per Rail from Florida, H. 

 C. Oberholser 659 



A New Myzocallis (Aphi- 

 didfe : Homoptera), W. M. 

 Davidson 660 



Some Poultry Lice and Mites 

 Found in Colorado, C. G. 

 Babcock 660 



The European Corn Borer in 



America, L. O. Howard— 061 



Facts Revealed in Two 

 Years' Work with the 

 European Corn Borer in 

 Massachusetts, D. ,J. Caf- 

 frey 661 



Corn Borer from the Stand- 

 point of Quarantine and 

 General Control, C. L. 

 Marlatt 661 



A Pink Yeast Causing Spoil- 

 age in Oysters, A. C. Hun- 

 ter 663 



The Horse Situation as I 

 Saw It in Europe, G. M. 

 Rommel 674 



Methods of Pedigree Breed- 

 ing at the Government 

 Poultry Farm, R. R. Slo- 

 cum 675 



A Study of the Factors In- 

 volved in Producing ]Milk 

 in North Carolina, S. 

 Combs and J. B. Bain 678 



Organization of Investiga- 

 tion in Agriculture, E. W. 

 Allen 698 



I 



ILLUSTRATION. 



Page. 

 Fig. 1. — New hydrogen electrode cell for continuous agitation 012 



' Printed in scientific and technical publications outside the Department. 



