INDEX 



187 



Rosette of Pinus radiata, 78-9 

 Rosetting, 68 



of deciduous fruit trees, 74-6, 92-3 

 Rubidium in animals, 124 

 Ruprecht, R. W., 87 

 Rusoff, L. L., 42, 139 

 Rutabaga, boron deficiency in, 82 

 Rye, manganese deficiency in, 61 



Sachs, J., 1 



Sakamura, T., 23 



Salt sick, 138-9 



Samuel, G., 59 



Saunders, D. H., 8 



Scarseth, G. D., 121 



Scharrer, K., 103 



Schmucker, T., 113 



Schoening, H. W., 128 



Scholz, W., 103 



Schropp, W., 103 



Scott, R. O., 149 



Scouring of cattle and sheep, 127, 131—5 



Seed production, necessity of zinc for, 



3-4, 71 

 Selenium content of plants, 128-31 



poisoning, control of, 130-1 

 of animals, 127-31 

 Shasta daisy, intervenal injection of, 54 

 Shealy, A. L., 138 

 Shearer, G. D., 140-2 

 Sheep, cobalt deficiency in, 145-50 



cobalt essential for, 127 



scouring of, 127 

 Shikata, M., 27 



Shive, J. W., 104-7, 116-22, 154 

 Shoot injection, 53, 56 

 Shoot-tip injection, 55 

 Sideris, C. P., 36 

 Siegert, T., 4 

 Sieling, D. H., 121 

 Silicon, species requiring, 18 



as micro-nutrient, 3, 5 



in animals, 125 

 Silver in animals, 124-6 

 Sjollema, B., 6, 94, 136-8, 141 

 Skelding, A. D., 26 

 Skok, J., 81-2 

 Skoog, F., 111-12 

 Slipped tendon of chicks, 143-5 

 Smith, A. M., 147 

 Smith, G. S., 46 

 Smith, M. E., 78-9 

 Smith, M. I., 128 

 Smith, R. E., 90-2 



Sodium as micro-nutrient, 2 

 Soils, cobalt content of, 147-9 



effect of liming on boron availability 

 of, 120-1 



effect of sulphur on selenium absorp- 

 tion from, 130-1 



molybdenum content of, 133 

 Somers, I. I., 104-7 

 Sommer, A. L., 3, 5-6 

 Sottery, C. T., 49 

 Soya bean, effect of iron-manganese 



ratio on growth of, 104-7 

 Spark spectra, 29 

 Speck, grey, 57, 58-62 

 Speckled yellows, 63-4 

 Spectral lines, measurement of in- 

 tensity of, 30 

 Spectrograph, 28-32 

 Spectrographs determination of alu- 

 minium, 48-9 



of boron, 44-5 



of cobalt, 50 



of copper, 41-2 



of manganese, 33-4 



of nickel, 50 



of zinc, 37-8 

 Spinach, manganese deficiency in, 63 



beet, manganese deficiency in, 63-4 

 Squash, boron deficiency in, 82 

 Steenbock, H., 136 



Steinberg, R. A., 6-9, 11, 22-3, 99-102 

 Stewart, A. B., 147-9 

 Stewart, J., 147-9 

 Stewart, W. L., 140 

 Stimulation of growth by trace ele- 

 ments, 11-12, 20 

 Stoate, T. N., 78 

 Stohlman, E. F., 128 

 Stoklasa, J., 4, 101 

 Storey, H. H., 55-6 

 Stout, P. R., 6, 24-5, 38-9, 96 

 Strawberry, intervenal injection of, 54 

 Strontium in animals, 124, 126 

 Sugar beet, heart rot of, 57 



speckled yellows of, 63-4 

 Sugar cane, Pahala blight of, 62 

 Sulphur, relation of, to absorption of 

 selenium by plants, 130-1 



deficiency of tea, 56 

 Sulphydryl compounds, 109-10 

 Summer die-back, 93 

 Sunflower, aluminium ner.essary for, 5 



copper necessary for, 6 



silicon necessary for, 5 



