12 U. S. BUREAU OF FISHERIES 



Swingle, W. W. 



1919. Iodine and the thyroid. IV. Quantitative experiments on iodine 

 feeding and metamorpliosis. Journal of General Physiology, vol. 2, 

 pp. 161-171. New York. 



1918. Iodine as the active principle of the thyroid gland. Endocrinology, 



vol. 2, pp. 283-288. Los Angeles. 



1919. Studies on the relation of iodine to the thyroid. I. The effect of 



feeding iodine to normal and thyroidectomized tadpoles. Journal 

 of -Experimental Zoology, vol. 27, pp. 397-415. Philadelpliia. 



Von Fellenberg, Th. 



1923. Untersuchungeniiberdas Vorkommen von Jodinder Natur. Mittei- 

 lungen aus dem Gebiete der Lebensmitteluntersuchung und Hy- 

 giene veroffentlich von eidg. Gesundheitsamt, vol. 14, No. 4, pp. 

 161-240. 



Woodruff, S. 



1923. Sources of iodine in our food supply. Journal of Home Economics, 

 vol. 15, pp. 33-34. Geneva, N. Y. 



o 



