1!1201 



CONTENTS. 



IX 



ri>4 



/ . .s. I»i„irtwent of A(iii«i(Uitrc—('nu. 



CIrc. 103, Mountain Outings on Page, 

 the Hainior National Forest__ "47 

 Circ. ItM, Fisliin^', limit iiif,', and 

 Canii>i"tr on tlie Cascade Na- 

 tional I'^irest 747 



Circ. 11'). Alfalfa 7=^^ 



Wci'klv Nt'ws Lt'ttcr, vol. 7, No. 

 40, June 10, 19J0 ; vol. 8, No. 8, 



S«'pt. li-J. r.f-'O 770 



Office of the Secretary : 



Circ. ini. Rules and Regula- 

 tions of the Secretary of 

 Auricu tnre Under the 

 Food I'rnducts Inspection 



I^iw (.f :May 31. 1020 794 



Circ. l.'>2, Value of govern- 

 ment Crop Reports. [E. T. 



Meredith], Au?., 1920 



lUireau of Crop Estimates : 



Monthlv Crop Rjitr., vol. 6, 



No. 8, Aug., 1920 



Rureau of M:trkets : 



Market Rptr., vol. 2 — 



No. 7, Auij. 14, 1920 



No. 8, Aug. 21. 1920 



No. 9, Autr. 28. 1920 



No. 10. Sept. 4, 1920_— 

 Rureau of Public Roads: 



Ruhlic Roails, vol. 3, No. 20, 



June, 1920 



I'urean of Soils : 



Field Oi>erations, 1917 — 



Soil Survey of St. Johns 

 County, Fia., A. E. 

 Tavlor, C B. Jones, 

 E. C. Hall, and C. N. 



M<M)ney ■ 



Soil Survey of Madison 



County, Miss., W. E. 



Tharp, E. H. Smies, 



and (}. W. Musgrave_ 



Field O f. era t ions. 1918 — 



Soil Survey of Kent 

 County, Del., .T. E. 

 Dunn. J. M. Snyder, 



and E. Hoffecker 



Soil Survey of La Salle 

 Parish, Ra., C. Louns- 

 bury and R. F. 



Rogers 



Soil Survey of Webster 

 County, W. Va., C. N. 



Mooney 720 



Federal Horticultural Roard : 

 Rules and Regulations Gov- 

 erning (1) Entry for Im- 

 mediate Export, (2) En- 

 try for Immediate Trans- 

 portation and F^xportation 

 in Bond, and (3) Safe- 

 guarding the Arrival at a 

 Port Where Entrv or 



794 



r94 



794 

 794 

 71^4 

 794 



r90 



719 



r20 



719 



20 



r. !■:. Department of Affriniltitrr — Con 



Federal Horticultural Board — i' 

 Continued. 



Landing is not Intendetl 

 or I'rohibitetl Plants and 



Plant Products 



Weather Bureau : 



Mo. Weather Rev., vol. 48, 

 No.s. 5-0, May-June. 1920_ 



Scientific Contributions : 



The Odorous Constituents of 

 Apples. — Emanation of 

 Acetaldehyde from the 

 Ripe Fruit, F. B. Power 



and V. K. Chcsnut 



The Production of Hydro- 

 chloric Acid from Chlorin 

 and Water, H. D. Gibbs__ 

 Tar-still Operation in Hard- 

 \voo<l Distillation Plants, 

 L. F. Hawley and H. N. 



Calderwood, jr 



Tlie Bioclimatic Law, A. D. 



Hopkins 



Genera and Supergenera, A. 



S. Hitchcock 



A\'ound Cork Formation in 

 the Potato in Relation to 

 Seed Piece Decay, M. 

 Shapovalov and H. A. Ed- 

 son 



[Report of Work with Field 

 Crops in Washington], G. 

 A. Olson, E. G. Schafer, 

 M. A. McCall, and C. E. 



Hill : 



Corn Exiieriments at the 

 Judith Basin Substation, 



W. P. Baird 



The Control of the Codling 

 Moth and Apple Scab in 

 Delaware, B. R. Leach 



and J. W. Roberts 



Destruction of Zoiispores of 

 Plant Disease Organisms 

 by Natural Enemies, R. B. 



Harvey 



The Wheat Nematode, Tp- 

 letichus tritici. Attacking 

 Rye, Oats, Spelt, and Em- 

 mer, L. P. Byars, A. G. 

 Johnson, and • R. W. 



Leukel 



Market Pathology and Mar- 

 ket Diseases of Vegetables, 

 G. K. K. Link and M. W. 



Gardner 



Is the Common Potato Scab 

 Controllable by a Mere 

 Rotation of Crops? M. 

 Shapovalov 



741 



717. 

 718 



711 



712 



717 

 718 

 729 



732 



7.30 

 738 



743 



750 



751 

 751 

 751 



' Prlntf'd in scientific and technical publications outside tbe Department. 



