2 DEPARTMENT OF AGRICULTURE BULS. 826-850. 



Bulletin 



Arsenates, use— No - Pa s e - 



against apple-tree borer 847 37-39, 41 



against bean ladybird 843 16-17, 23 



f 15-19 22 



in sprays for grape-berry moth 843< ' 2 4 



Ash, lumber production, 1918, by States 845 35, 46 



Bacillus tracheiphilus — 



isolation from cucumber beetles 828 24-25, 42 



transmission to cucurbits, and control studies 828 2-43 



Bacteria, wilt of cucurbits, bulletin by Frederick V. Rand and 828 1-43 



Ella M. A. Enlows 828 1-43 



See also Wilt, bacterial. 

 Baker, A. C, bulletin on "Generic classification of the heniipter- 



ous family aphididae " 826 1-109 



Bark scale, cypress, bulletin by F. B. Herbert 838 1-22 



Barkbeetles, injury to cypress trees 838 7 



Basswood, lumber production, 1918, by States. 845 33, 46 



"Bean bug." See Ladybird, bean. 



Bean ladybird, bulletin by F. H. Chittenden, H. 0. Marsh, and 



A. C. Mallory 843 1-24 



See also Ladybird, bean. 

 Beans — 



injury — 



f 1-2,5-7, 



by bean ladybird nature, and extent 843< 10-13, 



I 22-23 



by ladybirds 843J 1_ ^ ^ 



planting early and late to avoid ladybirds 843 15-16, 18 



varieties injured by bean ladybird 843 2 



Beech, lumber production, 1918, by States 845 29-30, 45 



Beef cattle. See Cattle. 



Bees, pollination of sweet clover. 844 3, 21 



Beetle- 

 spotted bean. See Ladybird, bean. 



12-spotted cucumber, occurrence on cucurbits 828 2,8 



Beetles — 



carriers of cucurbit wilt, experiments 828 3-4, 41, 42 



cucumber, relation to wilt disease 828 21-25, 43 



Beggar weed, pasture and hay value in the South 827 30, 36 



Berries, picking while cool, effects on disease resistance 830 2, 6 



Birch, lumber production, 1918, by States 845 28, 45 



Black sawfly. See Sawfly, black grain-stem. 



Black sawyer. See Sawfly, black grain-stem. 



Blackberries, cooling, effect on resistance to wounding, tests 830 2, 4, 5 



Boeger, E. A., bulletin on "Rent contracts in typical counties of 



the wheat belt' ' 850 1-15 



Borer — 



apple tree — 



food plants 847 3-4 



natural enemies 847 29-30, 41 



roundheaded apple-tree, life history and control bulletin by 



FredE. Brooks 847 1-42 



Borers, apple-tree, control directions 847 30-39 



Bottles, milk, washing and storing in city milk plant, details 849 20, 23-24 



Bran, particles in flour, counting 839 4-5 



Brandes, E. W., bulletin on "The mosaic disease of sugar cane and 



other grasses' ' 829 1-26 



Brooks, Fred E., bulletin on "Roundheaded apple-tree borer: Its 



life history and control' ' 847 1-42 



Broom corn — 



classification, and general description of culture 836 10-15 



dwarf, agronomic data 836 20-26 



