224 B. Silliman, Jr., on the Chemical Examination, §c. 
Chlorine, . ‘ ‘ ; ‘ ; oy oy oe MBO 
pamerre acid, . ; : : ‘ ; ort cle Ae QGBB 
. ‘ ; ‘ ; é bcs 10-5853 
Sitesi F , : ; \ 43922 
Alumina and ini of ated ye LG ‘ é i 9884 
Phosphate of alumina, . . ebieae sh : 3 3°8857 
Silica, . " é ‘ 6:1158 
Carbonate of modes wexjttiveleiats of ‘ 73209 
Nitric and crenic acids and loss, Bar tet at 
50-0550 
“Both the silica and phosphate of alumina in the analysis of 
No. 11 were separately analyzed after their weight was recorded, 
to ascertain their entire purity and freedom from other matters. 
We also made a series of experiments to determine the action of 
these waters on metallic lead. The result of these trials was that 
every water, except No. 2, (Croton,) acted more or less on the 
lead. Those interested will = these — —— in the re- 
port before quoted. 
In conclusion we may denies shat all natural waters may in 
a certain sense be properly talled mineral waters, as they must 
each possess a specific and peculiar character dependent on the 
nature and amount of solid matters which they contain, and this 
must depend ultimately on the geological structure of the country 
where they are found. It is curious and instructive to see that | 
even those waters which we consider the purest, contain, in @ 
notable quantity, matters: which are absolutely intliggonisible to 
satisfy the demands of the vegetable world, (and ultimately the 
animal also ;) and when we remember the vast amount of evap- 
oration from the expanded leaves of a full grown forest tree du- 
ring a single summer day—can we any longer be at fault for a 
cause sufficient to account in the most satisfactory manner, for 
the various inorganic constituents of plants? It cannot be doubt- 
ed that natural waters act a most important part in conveying ito 
the upward current of organic life those inanimate elements, 
which, from their constant presence in plants, must be of primary 
tierortanos:, nee we are ata loss to explain the mode of 
their action.* 
eee Reto: Bul 15, 1846. 
re oing analyses were ede by. authority « of the city of Boston, prepat- 
“the sources to y that m a ‘Long Pond (Nos. 
= 
nr sat 
= ee 
