24 BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



* No. 51. Miscellaneous Papers. I. The Wilt Disease of Tobacco 



and Its Control. By R. E. B. McKenney, Physiologist. 

 II. The Work of the Community Demonstration Farm 

 at Terrell, Tex. By Seaman A. Knapp, Special Agent. 

 *III. Fruit Trees Frozen in 1901. By M. B. Waite, 

 Pathologist. IV. The Cultivation of the Australian 

 Wattle. By David G. Fairchild, Agricultural Explorer. 

 *V. Legal and Customary Weights per Bushel of Seeds. 

 By Edgar Brown, Botanist in Charge of Seed Labora- 

 tory. VI. Golden Seal. By Alice Henkel, Assistant, 

 and G. Fred Klugh, Scientific Assistant. 1905. 46 pp., 

 5 pis., 5 figs. Price, 5 cents. 



Contents : The wilt disease of tobacco and its control : The disease — Cause 

 of the disease — Control of the disease. The work of the comnumity demon- 

 stration farm at Terrell, Tex.: Introduction — Results accomplished — Methods 

 employed — Description of the farm — Fertilizers used — Cotton — Corn. Fruit 

 trees frozen in 1904 : Introduction — Damage to bearing peach orchards : How 

 to treat the peach orchards — Injury to plum trees — Injury to nursery trees^ — 

 Damage to pear trees. The cultivation of the Australian wattle. Legal and 

 customary weights per bushel of seeds : Introduction — Legal weights per 

 bushel — Customary weights per bushel. Golden Seal : History — Habitat and 

 range — Common names — Description of the plant — Description of the rhizome, 

 or rootstoek — Collection and pre])aration of the root — Diminution of supply — 

 Cidtivation : Necessary soil conditions; fertilizers; artificial shade; use of 

 trees as shade ; attention required ; methods of propagation ; experiments 

 with seeds; experiments with divided rhizomes; experiments with plants 

 from fibrous roots ; yield of roots ; time necessary to mature crop — ]\Iarket 

 conditions : Highest and lowest prices. 



* No. 52. Wither-Tip and Other Diseases of Citrous Trees and Fruits 



Caused by Colletotrichum Gloeosporioides. By P. H. 

 Rolfs, Pathologist in Charge of Subtropical Laboratory. 

 1904. 22 pp., 6 pis. (including 3 in colors), 1 fig. Price, 

 15 cents. 



Contents : Introduction — Distribution of the diseases — General method of 

 attack : Extent of injury — Varieties attacked — Lime : Anthracnose ; wither- 

 tip ; fruit canker — Lemon : Leaf -spot and wither-tip ; lemon-sjjot ; the color- 

 ing house ; the coloring bed — Orange and pomelo : Leaf-spot ; wither-tip — 

 Descrijjtion of the fungus : Synonymy — Preventive and remedial measures : 

 Treatment to prevent lemon-spot; treatment of lime trees; the effect of prun- 

 ing; cultivation and fertilization ; fertilizers — Summary — Description of plates. 



* No. 53. The Date Palm and Its Utilization in the Southwestern 



States. By Walter T. Swingle, Physiologist in Charga 



of Laboratory of Plant Life History. 1904. 155 pp.,. 



22 pis., 10 figs. Price, 20 cents. 



Contents: Introduction — What is the date palm? — Date culture by the 

 ancients — Propagation of the date palm : Seedling ])alms ; seedling date 

 palms for the Salton Basin ; ])ropagation of the date palm by offshoots ; dis- 

 tances between trees ; proportion of male trees that should be planted ; varie- 

 ties of male date palms — Care to be given date palms : The age at which date 

 palms begin bearing; pollination of the date i)alm ; gathering, curing, and 

 ]iacking dates — Types of dates and varieties suitable for culture in the United 

 States : The three types of dates ; varieties of dates suitable for culture in 

 the United States ; the Deglet Noor date ; the Khalas date ; other promising 



101 . 



