62 



MARINE AND FISHERIES 



5 GEORGE v., A. 1915 



material was obtained. The other tissues examined were obtained from two 

 female specimens, with the exception of the testes, taken from a male specimen 

 selected at random. 



Tissue examined 



Thyroid, sample 1 



Per cent. Iodine. 



Amount Iodine 

 taken found 



0.2015 g. 0.000394 g. 0.195% 



sample 2 



0.2003 

 0.1005 



0.000391 

 0.000197 



0.195 

 0.196 



Mean 0.195% 



sample 3 



0.1000 0.000224 0.224 



The liver residue was obtained by beating the liver at 100® C. for some time, 

 and pouring away the clear oil. It consisted of an oily mass which could not be 

 sampled properly (whence the varying results) and amounting to only three- 

 elevenths of the whole. The "dog-fish oil" was a sample of the commercial oil 

 sold in Nanaimo and used for miners' lamps. Various fish liver-oils have been 

 reported to contain iodine (*), but in amount not detectable by the method of 

 analysis I have employed. 



1 iSee for example, Stanford, Chem. News, 1883, 48, 233. 



