INDEX. 



Bulle- 

 tin No. Page. 

 Beets, sugar, irrigation, effects of different volumes of water, experi- 

 ments in Idaho 339 IS 



Betula papyri/era. See Birch, white. 

 Bibliography — 



birds of Porto Rico 326 130-132 



Simulium genr s 329 35-48 



Billings, G. A., W. J. Spillman, and H. M. Dixon, bulletin on 



"Farm management practice of Chester County, Pa." 341 1-99 



Binders, grain and corn, service period, relation to work done 338 20-21 



Biotite, occurrence in rock, nature and value for road building 348 7-8 



( 35, 36, 



Birch, white, pulp, experiments and tests 343{ 46-47, 



I 118, 144 



Bird life in Porto Rico, abundance, habits, etc 326 4-7 



Birds — 



economic importance in Porto Rico 326 7-11 



feeding habits in Porto Rico 326 5-11 



increase of number in Porto Rico, needs and suggestions 326 11-14 



list, feeding on termites 333 9 



Porto Rico — 



annotated list 326 17-129 



bulletin by Alex Wetmore 326 1-140 



investigations, areas explored, itinerary 326 2 



Bitterns, occurrence in Porto Rico, species, variant names, habits 



and food 326 26-27 



Blaacus blancoi, occurrence in Porto Rico, habits and food 326 83-84 



Black gum — 



pulp, experiments and tests 343 47, 120, 144 



region of production, map 343 57 



Black spruce, occurrence in Rocky Mountain region, variant names, 



characteristics and growth habits 327 3-6 



Blackbirds, occurrence in Porto Rico, variant names, habits, and\ ooef 113-115, 



food. / 6Zb \ 117, 120 



Blue spruce- 

 historical notes. 327 14 



occurrence in Rocky Mountain region, variant names, charac- 

 teristics and growth habits 327 14-17 



Blueberries — 



culture, 1916, directions, bulletin by Frederick V. Coville 334 1-16 



growing, requirements 334 1-2 



yield and profits 334 15-16 



Blueberry — 



characteristics 334 3 



field planting : 334 11-15 



plantation, Indiana, yields and profits, 1910-1915 334 16 



plants, treatment 334 11 



propagation methods 334 3-15 



varieties, selection, importance 334 3 



Bobolink, occurrence in Porto Rico, note 326 113 



Boeger, E. A., and E. A. Goldenweiser, bulletin on "A study 



of the tenant systems of farming in the Yazoo-Mississippi Delta " . 337 1-18 

 Bog spruce. See Black spruce. 



Boll worm , pink, menace to Egyptian cotton crop . .- 332 5 



Boobies, occurrence in Porto Rico, species, variant names, habits 



and food '. ... 326 18-19 



Books, injury by termites ' 333 16-i 7 



Botnurus lentiginosus, occurrence in Porto Rico, notes 326 27 



Bran, rice — 



marketing, note 330 10-11 



yield from milling rough rice 330 26-27 



Brand, C. J., and others, bulletin on "Community production of 



Egyptian cotton in the United States " 332 1-30 



Bread, effect of impurities in wheat 32s{ 11 ' j^f 



