. The thyroid gland in health and disease. FajWjftt FCli-\,&.iL. ^ ie*.Li^ Fig. 32.—Experimentally-produced goitre in rats. 100 per cent, of the animalsconsuming fsecal material developed goitre within a period of two months, the controls remaining normal. Figs. 11, 12, 13, 16, 22, 23 are sections of thesegoitres or of others experimentally-produced. each of three equally-sized compartments of a singlewooden cage. One lot received clean food and water, 7 98 ENDEMIC GOITRE and acted as controls ; another received the residue lefton the candle of a Berkefeld filter after filtration of a
. The thyroid gland in health and disease. FajWjftt FCli-\,&.iL. ^ ie*.Li^ Fig. 32.—Experimentally-produced goitre in rats. 100 per cent, of the animalsconsuming fsecal material developed goitre within a period of two months, the controls remaining normal. Figs. 11, 12, 13, 16, 22, 23 are sections of thesegoitres or of others experimentally-produced. each of three equally-sized compartments of a singlewooden cage. One lot received clean food and water, 7 98 ENDEMIC GOITRE and acted as controls ; another received the residue lefton the candle of a Berkefeld filter after filtration of anemulsion of faeces from a non-goitrous resident of agoitrous district; while the third lot received the filtrateof this emulsion. The experiment lasted two months,when, on killing the animals, it was found that 100 percent, of those receiving faecal material showed large-sized goitres, while the controls were perfectly-normal. [20.]
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