INDEX 



185 



Mann, M., 7 



Mann, T., 112, 126, 136, 150-1, 154 



Marasmus, enzootic, 145-50 



Marloth, R. H., 7 



Marsh, R. P., 116-18, 120-1 



Marsh spot, 64-7 



Marston, H. R., 51 



Martin, A. L., 131 



Martin, D., 89, 100 



Martin, J. H., 144 



Mathews, E. M., 88 



Maunsell, P. W., 147 



Maynard, L. A., 143 



Maze, P., 3, 11, 13, 110 



Melampsora Lini, protective effect of 



boron against, 123 

 Meldrum, N. U., 110, 150 

 Melvin, E. H., 33, 42, 45 

 Metz, O., 8 



Micro-organisms associated with grey- 

 speck, 59-61 



little leaf and white bud, 75-6 

 Microphotometer, 30 

 Miller, C. E., 121 

 Miller, E. C, 2 

 Miller, E. J., 40 

 Miller, J. T., 129 

 Miller, W. T., 128-9 

 Millet, aluminium necessary for, 5 



silicon necessary for, 5 

 Milo, zinc necessary for, 71 

 Minarik, C. E., 116-17, 120 

 Mineral deficiencies in plants, diagnosis 



of, 51-6 

 Mitchell, R. L., 48, 50-1, 147-9 

 Mollusca, copper in, 136 

 Molybdenum, determination of, in 

 plant material, 48 



species requiring, 20 



symptoms of deficiency of, 6 



as micro -nutrient, 6-7 



content of pasture plants, 132-5 

 of soils, 133, 149 



deficiency, symptoms of, 96 



poisoning, control of, 135 



of cattle and sheep, 127, 132-5 

 Morner's test, 110 

 Morris, A. A., 116 

 Morrison, D. B., 49 

 Morton Mains disease, 145-50 

 Mosher, W. A., 8 

 Mottle leaf of Citrus; 76-7 

 Mottling of Citrus, 76-7 



of deciduous fruit trees, 74 



Mowry, H., 3. 77-8 



Moxon, A. L., 128 



Muhr, G. R., 121 



Muir, W. R., 132 



Mules, selenium poisoning in, 128-9 



Mull, J. W., 49 



Mu-oil tree, frenching of, 68 



Mushroom, catechol oxidase of, 112 



Mustard, boron necessary for, 3 



Mycosphaerella striatiformans, 62 



Myers, V. C, 49 



Naftel, J. A., 46 

 Nakamura, M., 12 

 Nakuruitis, 139 

 Neal, W. M., 138 

 Nelson, E. M., 128 

 Nelson, V. E., 136 



Nemertea, elements present in, 124-5 

 Newell, W., 77 



Nickel, determination of, in soil and 

 plant material, 49-51 



in animals, 124—5 

 Nitrogen assimilation, effect of man- 

 ganese on, 102-3 



metabolism, effect of boron on, 122-3 

 Nobbe, F., 4 

 Norris, L. C, 143-5 

 Nutrient solutions, purification of, 22-6 



Oat, copper deficiency in, 94-6 



effect of trace elements on growth of, 1 1 



grey speck disease of, 57, 58—61 



manganese content of, 59 

 deficiency in, 57, 58-61 



molybdenum deficiency in, 96 

 O'Brien, D. G., 3, 85 

 O'Connor, R. T., 33, 38, 42, 45 

 Ogg, W. G., 138, 145 

 Olive, copper deficiency in, 90, 92 

 Olsen, C, 36 

 Optical spectroscopic determination of 



boron, 45 

 Orange, copper content of, 94 



copper deficiency in, 92 



zinc deficiency in, 7 

 Orr, J. B., 139 

 Orton, W. A., 72 

 Oserkowsky, J., 6, 92 

 Ovinge, A., 65 

 Oxidase, 110-11, 154 

 Oxidation-reduction catalysts, 99, 109- 

 13, 154 



regulators, 98-9, 103-7, 109-11 



