so ROYAL SOCIETY OF CANADA 



Samples from Ocean Between Madeira and Bay of Biscay. 



The range is from about 8 to 40, and the average value of all 

 Professor Joly's determinations is 16. 



As my published values were so much smaller than the above 

 it seemed desirable to make some more measurements and ascertain 

 the reason for the difference. 



In 1908, on a voyage from Liverpool to Montreal, six samples 

 were collected by myself in a canvas bucket over the side of the 

 vessel and placed in six clean new glass bottles. The first two sam- 

 ples were collected whilst the water was warm and the ocean currents 

 were from the south, but the second pair was obtained when the sea 

 was cold and these currents were from the north, while the last two 

 were from the Gulf of St. Lawrence and, therefore, nearer shore. These 

 six samples then together seem to constitute a fair average sample 

 of the waters of the North Atlantic. 



The sea-water was taken from the bottles and placed in six new 

 glass flasks and, except with sample 1, the bottles were well rinsed 

 with HCl and distilled water which were afterwards added to the 

 sea-water in the respective flasks. A seventh flask was also filled 

 with distilled water and 60 c.c. HCl in order to see if there was any 

 radium present in the flasks, water or acid used. 



