26 



DEPARTMENT OF AGRICULTURE, BULS. 326-350. 



White- 

 balsam. See White fir. Bulle- 

 birch — tin No. Page. 



pulp, experiments and tests 343J t^~fll 



{, llo, 144 



region of production, map 343 56 



currant grape, variant names, description and characteristics. . . 349 10-11 



historical notes 327 



occurrence in Rocky Mountain region, variant names, char- 

 acteristics, and growth habits 327 33-38 



pulp, experiments and tests 343J ' ^~-, 9 J: 



region of production, map 343 38 



See also Grand fir. 



grub, bird enemies in Porto Rico 326 11 



pine — 



pulp, experiments and tests 343 45, 114, 140 



region of production, map 343 50 



spruce — 



historical notes 327 6-8 



occurrence in Rocky Mountain region, variant names, char- 

 acteristics, and growth habits 327 6-10 



region of production, map 343 53 



Wild cotton — 

 plant — 



occurrence and habitat c 344 2-6 



See also Thurberia. 

 weevil — 



occurrence and habitat 344 2-6 



See also Weevil, wild-cotton. 

 Wild vetch. See Vetch, wild. 

 Winter — 



barley. See Barley, 

 rye. See Rye. 

 spelt. See Spelt, 

 wheat. See Wheat. 



Wisconsin, cherries, growing and packing industries 350 3 



Wise, F. B., and A. W. Broombll, bulletin on " The milling of rice 



and its mechanical and chemical effect upon the grain " 330 1-31 



Wood pulp — 



grinding, power increase, etc. , suggestions and needs 343 64-66 



ground, bulletin by J. H. Thickens and G. C. McNaughton 343 1-151 



imports and exports, 1901-1914 343 4^5 



steamed, uses 343 29-32 



AVoodpecker, Porto Rican, occurrence in Porto Rico, habits and food . 326 62-64 



Woods — 



grinding for paper pulp, effect urjder variable conditions 343 17-34 



substitutes for spruce for ground-wood pulp, experiments 343 27-151 



tests for ground-wood pulp, species and results 343 34-151 



Yazoo-Mississippi Delta — 



extent, land values, and crops 337 2-3 



tenant systems of farming, study, bulletin by E. A. Boeger and 

 E. A. Goldenweiser 337 1-18 



Yellow- 

 legs, occurrence in Porto Rico, variant names, habits, and food . . 326 42—43 

 throat, northern, occurrence in Porto Rico, note 326 99 



Yuma cotton, description and value 332 12-13 



Zenaida zenaida lucida, occurrence in Porto Rico, habits and food. . . 326 51-52 



Zenaidura macroura macroura, occurrence in Porto Rico, note 326 52-53 



o 



