INDEX. 93 



Page. 



Cobb, N. A., method of installing microscope 42 



Cockling of blueberry leaves due to a mite 80 



Collins, G. N., photographs illustrating peat formation 33 



Color, importance as market feature 12 



Coloration. See Purpling. 



Conclusions, summary statement 88-89 



Cotyledons. See Blueberry, cotyledons. 

 Cranberry bog. See Bog, cranberry. 



culture system, adaptability to blueberry growing 88-89 



European, root fungus, study 49 



Crocks, broken, use in soil for repotting heath plants 69-70 



Crossing, use in improvement of blueberry 82 



Cultivation, blueberry, possibility, erroneous popular idea 11 



Culture, conclusions, summary statement 88-89 



field, of the blueberry 86-88 



pot, methods, swamp blueberry 51-80 



water, experiment 36 



Cushions, sphagnum, growth in peat bogs 39 



Cuttings, development of flowering buds on 73 



use in propagation, advantages and objection 84-85, 86 



Cypripedium acaule, occurrence in bogs and on sandy uplands 35 



Darkening of glass pots, method 15 



Dawson, Jackson, on growth of blueberry 11, 68, 69 



Deerberry, propagation by rootstock cuttings 86 



undergrowth on noncalcareous soils, Alabama 19 



Dormant plants. See Plants, dormant. 



Douglass, John, partial planting of Smithsonian grounds 11 



Downing, A. J., plan of Smithsonian grounds 11 



Drainage, necessity in field culture 88 



of glass pots. 14 



See also Watering. 



Drosera, insect food for supply of nitrogen 50 



Dryness, importance as market feature 12 



physiological, discussion 35 



soil, injury to blueberry plants 66, 69 



Earthworms, injurious effects on blueberry plants 38 



Ectotrophic mycorrhiza. See Mycorrhiza. 



Embryo, blueberry seed, development 53 



Endosperm, blueberry seed 53 



Endotrophic mycorrhiza. See Mycorrhiza. 

 Enzymatic transformation. See Starch, transformation. 

 Epidermal colls. See Blueberry, rot)ts. 



Epigaea repens, avoidance of limestone soils 19 



Erica spp., root fungus, study 49 



See also Heaths and Heather. 

 Experiment stations. See Stations, agricultural experiment. 



Extraction, method for soil-acidity tests 27 



Farkleberries, undergrowth on noncalcareous soils, Alabama 19 



Fernald, M. L., on soil preferences of alpine and subalpine plants 19 



Ferns, use of Maryland peat for growing 32 



Field culture. See Culture, field. 



Flats, use for seedlings 51-54, 60 



Flavor, excellence in parent plant 81 



importance as market feature 12, 81 



Flax, injurious fungus in root 65 



Flooding of blueberries in winter 36, 88 



Flowering buds. See Buds. 



of seedlings 73, 87 



Flowers, description 76-78, 81 



Formulas, acid and alkaline nutrient soluti<ms 28-29 



Frank, A. B., naming of fungus endotrophic mycorrhiza 43 



Freestone, pieces, use in soil for repotting heath plants 70 



Freezing, effect on blueberry plants 74-76 



Fruit, on a plant eleven months old 67 



193 



