INDEX. 



Page. 



Acid, citric, normal solution, relation to pure lemon juice 28 



nutrient solution. See Solution, nutrient, 

 soil. See Soil, acid. 



Acidity, phenolphthalein test 26-28 



tests, peat, roots, leaves, etc 22, 35, 61-62 



Aeration, conditions satisfactory for blueberry 35-36, 36-37, 37-39, 55 



necessity in interior of pots 69-70 



promoted by plunging potted plants 65-67, 69 



Agricultural experiment stations. See Stations, agricultural experiment. 



Alabama, absence of blueberry and related plants in ' ' black belt' ' 19 



Alfalfa, pot cultures in garden soil and in peat, comparison 15-17 



preference for alkaline soils 29 



Algae, darkening of glass pots necessary to prevent growth 15 



Alkali, determination by phenolphthalein test 22, 26-28 



Alkaline nutrient solution. See Solution, nutrient. 



soil. See Soil, alkaline. 

 Alpine blueberry. See Blueberry, alpine. 



Ammonia derived from humus 47 



solution used to extract humus 47 



Andromeda polifolia, root fungus, study 49 



Aphis, green, destruction by tobacco fumigation 79 



Arboretum, Arnold, blueberry bushes 11 



Arbutus, trailing, avoidance of limeslone soils 19 



Asterocystis radicis, resemblance to injurious fungus of blueberry root 65 



Atlantic Coastal Plain. See Plain, Atlantic Coastal. 

 Atmospheric nitrogen. See Nitrogen, atmospheric. 



Azalea nudiflora, occurrence in bogs and on sandy uplands 35 



use of kalmia peat for growing 32 



Azotobacter chroococcum, nitrogen-fixing bacterium in soil 49 



Bacteria, in clover roots, fixation of atmospheric nitrogen 48-49 



kalmia peat and cow manure, comparison 64 



nitrifying, inability to thrive in acid soil 46, 47 



of ordinary leaf decay, conditions of inability to thrive 31-32 



Banks, Nathan, identification of mite 80 



Bark, condition for budding " 84 



Basal branches. See Branches, basal, 

 shoots. See Shoots, basal. 



"Belt, black," Alabama, absence of blueberry and related plants 19 



Berry, size, flavor, etc., in various species 12, 79, 81 



importance as market feature 12, 14 



on parent plant 81, 82 



See also Fruit. 

 "Black belt." -S^'e "Belt, black." 



Blackening, leaves, a pathological disturbance 56 



Bladderworts, insect food for suj^ply of nitrogen 50 



Bloodroot, soil not suitable for blueberry 24 



Blueberries, prices in Boston market 12, 81 



Blueberry, alpine, soil preferences 19 



and huckleberry, means of distinguishing 13 



related plants, occurrence, adherence to acid soils 30 



bog. See Bog, blueberry. 



branching types, description 58, 59 



bush habit, cause 57 



caustic effect of lime on plants 20 



cockling of leaves due to a mite 80 



conclusions, summary, statement 88-89 



cotyledons, description and development of branches from axils. 53, 57-58 



193 91 



