PHILOSOPHICAL TRANSACTIONS. 
XVII. Memoir on the occurrence of Iodine and Bromine in certain Mineral 
Waters of South Britain. By Charles Daubeny, M.D. F.R.S. Professor of 
Chemistry in the University of Oxford. 
Read May 6, 1830. 
XHE discovery in sea-water of iodine and bromine, two principles which, 
although in minute proportions, are said to be generally diffused throughout 
the present ocean, naturally suggested the inquiry, as to whether these same 
ingredients might not be found to exist in springs occurring in inland situa- 
tions when containing a similar saline impregnation. This accordingly has 
been already determined by Stromeyer, Liebig, and others, to be the case in 
many of the brine-springs of Germany, France, and Italy ; but at the time 
my attention was first directed to the subject, I was unacquainted with any 
trials of the kind having been instituted with reference to those of this country, 
except by Professor Turner of the London University, regarding the presence 
of iodine in the mineral waters of Scotland ; in only one of which, that of 
Bonnington near Leith, he appears to have detected it. I was therefore induced 
in the course of last spring and summer to undertake a pretty extensive survey 
of such English springs as are known to contain a considerable proportion of 
common salt ; and having succeeded in detecting in several of them traces of 
one or both the substances alluded to, I inserted a brief account of the results 
obtained, in the Philosophical Magazine and Annals of Philosophy for Sep- 
tember last. 
An article that has appeared in a subsequent number of the same periodical 
work has, however, been the means of drawing my attention to a little work 
2 G 
MDCCCXXX. 
