Bull. U. S. B. F. 1912. Plate CVIII. 



Fit;. US. — Section near periphery of enlarged thyroid of dog 18. The process is less intensive than near the center. 

 as illustrated in figure 117 and 119. Columnar epithelium, marked papillary growths into distorted alveoli. Colloid 

 absent. X160. 





Kk;. 119. — Section from center of enlarged thyroid of dog IS. showing large congloujerate nia-sst-.-^ ui *_l1:.-.. iltt;-!:. 

 staining nuclei, coalescing protoplasm. Picture similar to the acute infectious thyroiditis of de Quer\-ain. and diffuse 

 parench> malous goiter produced in dogs by Bircher b.v the administration of water from goitrous wells. X16l'. 



