CARCINOMA OF THE THYROID IN SALMONOID FISHES. 445 



If the sketch of the Gilgit water supply is referred to it will be observed that the Bartnis spring 

 joins the supply already described at 3, Majinpharri. This spring does not produce goiter; it is the 

 supply of all the European residents and their servants; there is also a small village on its banks, among 

 the inhabitants of which there is no single case of the disease. It is a very pure water, springs from 



Fig. 83. — Diagramxnatic sketch showing water supply uf the villages of Gilgit fan, India- After McCarrison. 



atnong rocks, and I have been unable to trace any case of the disease due to the drinking of its water. 

 This is a point of very considerable importance, showing as it does that the other water supply is the 

 vehicle by means of which goiter is produced in the inhabitants of Gilgit. The analysis of this water 

 of Barmis will be found in the table of analyses of Gilgit waters (table m). 



