INDEX 



181 



Chlorella, function of manganese in, 

 103 



manganese necessary for, 8 

 Chlorine, species requiring, 18 



as micro-nutrient, 2-4 

 Chlorophyll formation and trace ele- 

 ments, 101 

 Chlorosis of apricot, 92 



of French prune, 91 



of fruit trees, 6, 55, 74-7 



of maize, 61-2, 79-80 



of oat, 94-6 



of orange, 92 



of peach, 92—3 



of pecan, 71 



of Pinus radiata, 79 



of plum, 92-3 



of sugar beet, 63—4 



of sugar cane, 62-3 



of tung, 67-8 

 Chromium in animals, 125 

 Citrus, copper deficiency in, 90-4 



cytology of mottled leaves of, 69- 

 70 



effect of boron deficiency on, 8 1 



zinc deficiency in, 76—7, 109 

 Coacervation, 110-11 

 Cobalt, determination of, in soil and 

 plant material, 49-51 



content of soils, 147-9 



deficiency in sheep and cattle, 139, 

 145-50 



essential for sheep, 127 



in animals, 124—5, 127 

 Coccomyxa simplex, effect of iron, zinc 



and copper on, 8 

 Cole, J. R., 72 



Colorimetric determination of alu- 

 minium, 49 



of boron, 46-7 



of cobalt, 51 



of molybdenum, 48 

 Columbium, effect of, on growth of 



Penicillium Javanicum, 7, 19 

 Coleman, D. R. K., 36 

 Colwell, W. E., 87-8 

 Cook, J. W., 36 

 Cook, R. L., 121 

 Copper, determination of, in ash, 41-4 



effect of, on scouring, 135 



function of, in animals, 150 

 in plants, 98-101, 112-13 



species requiring, 19 



as micro-nutrient, 5-6, 7, 8 



Copper content of blood of ewes, 142 

 content of plants, 92-4, 137 

 deficiency diseases, 90-6 

 deficiency in animals, 136-42 

 essential for haemoglobin formation, 



126 

 in animals, 124-6 



Cork, internal, of apples, 88-9 



Corky core, 89 



Corky pit, 89 



Corner, H. H., 147 



Cotton, boron necessary for, 3 



effect of boron on metabolism of, 

 122-3 



Cowling, H., 40 



Cracked stem of celery, 87 



Crane, H. L., 74 



Crichton, A., 138, 145 



Crone, Von der, 1, 2 



Crucigina, effect of trace elements on, 

 12 



Crustacea, copper in, 136 



elements present in, 124-5, 150 



Culture solutions, purification of, 22-6 



Cummings, R. W., 32, 38-9, 42 



Cunningham, I. J., 136 



Cysteine, 109-11 



Cystine, 110 



Cytology of zinc -deficient leaves, 69-70, 

 109 



Daising, 145-50 



Davenport, H. W., 150 



Davidson, A. M. M., 51 



Davies, W. Morley, 64, 87 



Davis, A. R., 7 



Dean, L. A., 36, 64 



Dearborn, C. H., 86 



Deciduous fruit trees, little leaf or 



rosette of, 74-6 

 Deficiencies, diagnosis of mineral, 5 1-6 

 Deficiency diseases of animals, 136—50 



of plants, 57-96 

 Deficiency of boron, symptoms of, in 

 plants, 80-3 

 of boron in plants, 80-9 

 of copper, symptoms of, in plants, 90 

 of copper in animals, 136-42 



in plants, 90-6 

 of manganese, symptoms of, in 



plants, 57-8 

 of manganese in animals, 127, 143-5 



in plants, 57-68 

 of molybdenum in plants, 96 



