166 INDEX TO YEAEBOOKS, 1901-1905. 



Wormseed, American, cultivation and demand, 1905, 535. 

 Wrapper leaf tobacco, growing in Connecticut, reports, 1902, 71-74; 1904, 76-77. 

 tobacco, most useful shape of tobacco leaf, 1904, 444. 



requirements for plug and for Austrian cigars, 1905, 221-222. 

 supply and prices, 1904, 436. 

 Wrappers, plug tobacco, experiment for improvement, 1904, 78. 

 Wreck and vessel reporting service, reorganization, 1904, 18. 

 Wrens, house, destruction of injurious insects, note, 1902, 216. 



usefulness, note, 1904, 514. 

 Wyoming mares, purchase for Department experiments, breeding, 1904, 533-534. 

 public control of irrigation, 1901, f82. 



Y. 



Yard, plans for home adornment, 1902, 504, 505. 



plants as a factor in home adornment, article, 1902, 501-518. 

 Yarns, mixing of cotton and linen at Belfast, 1901, 195. 

 Yazoo City, Miss., soil survey, remarks, 1901, 127. 



soils, facts from soil survej^, 1902, 58. 

 Yearbook, Department, distribution, 1905, 91-92. 

 index cards, 1903, 103. 

 suggestions for improvement, 1901, 103. 

 Yeast cultures, use in wine making, 1904, 370. 



use in bread making, 1903, 249. 

 Yellow fever, spread by insects, discussion, 1901, 190. 

 mosquito, 1905, 80. 

 pine. See Pine, yellow. 



wood, use in home adornment, details, 1902, 513. 

 Yellowing of foliage of plants, note, 1901, 169. 



plants, causes, notes, 1901, 161, 167. 

 Yellows, peach, prevalence, 1901, 669; 1902, 716; 1903, 550; 1904, 583; 1905, 604, 610. 

 Yellowstone, Lower Falls, remarks. 1901, 534. 



National Park, big game in 1905, 1905, 615. 



preservation of native animals, 1905, 562. 

 Yellowthroats, Maryland, migration, note, 1903, 380, 381. 



Yield of corn, average per acre, for United States, prospect of doubling, 1903, 175. 

 relation of precipitation, article by J. Warren Smith, j.903, 215-224. 



charts, description, and discussion, 1903, 

 216-224. 

 per acre of com, wheat, oats, barley, rye, buckwheat, potatoes; hay, 1901, 700, 

 711, 720, 726, 734, 739, 742, 746. 

 Yields of wheat, etc., in crop rotation, etc., 1903, 451. 



See also Corn; Wheat. 

 Ylang-ylang, growing in Philippines, note, 1901, 362. 

 Yosemite Falls, remarks, 1901, 535. 



Yucatan, center of production of agave fibers, remarks, 1902, 319. 

 Yucca treculeana, use of fiber, 1903, 398. 

 Yukon River, experiments in growing cereals, 1901, 69. 



Z. 



Zamelodia malanocephala, eating of fruit, 1904, 248. 

 Zimmer Spanish tobacco district in Ohio, soil survey, 1901, 125. 

 Zinc chlorid treatment, wood preservation, 1903, 438. 

 creosote processes, wood preservation, 1903, 437. 



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