Bibliography. 197 
results, more precious than mines of gold.”? This is no idle boasting. 
The author in a chapter of thirty seven pages, on the Mutual Action of 
the Organic and Inorganic Elements of Soil, has opened some of these. 
mines—enough to bring up to view rich samples of the golden ore. 
In plain language, we have never met with so luminous and satisfactory 
a view of the mutual and complicated action of silicates, salts, and geine, 
as this chapter presents. Gladly would we lay before our readers an 
analysis of its contents, but we must forbear. 
Similar remarks will apply to the still longer chapter on manures, 
and to that on artificial manures. For the numerous analyses by 
the author of several sorts of manure, and the important results he 
hence deduces, and for the important suggestions he makes as to artifi- 
cial manures, he deserves the gratitude of his country and the patron- 
age of its government. For if heeded by the farmer, the doubling at 
least of our agricultural productions will undoubtedly be the result, and 
few farmers can read these chapters without being convinced that 
“rivers of riches run away from farms from want of attention to saving 
that which ordinarily is allowed to be wasted.” _ p. 175. 
a conclusion, we can cordially recommend this work to our agricul- 
ural friends for its practical character. It is not saying too much to 
assert, that Dr. Dana has done for the farmer in this treatise, what Dr. 
Bowditch did for the sailor when he published his Practical Navigator. 
this respect this treatise contrasts strongly with such a work as that 
of Liebig on the Organic Chemistry of Agriculture, &c. which, not- 
withstanding its originality and the philosophical beauty of its theories, 
is apt to make the impression upon the ppp eee 3 
to expect much from agricultural chemistry but inge j 
We are sure-that Dr. Dana’s work will remove dhe § Siipetinbae ‘isle 
on the ‘other hand, the chemist will see in it evidence of the rapid 
advance of this science. “agg two years, three able European chem- 
ists, Liebig, Daubeny, and . , have given to the world most ma- 
ture and valuable frenfised upon 5 and now we have a cis-Atlantic 
effort, which will not suffer by a comparison with any other. Truly 
the genius of agriculture may exult in the bright prospects that are 
ene before her. | 
“10. ‘Address. delivered at the Anniversary meeting of the Geological 
Sictety of London, Feb. 18, 1842; and t the announcement of the 
award. of the Wollaston Medal and Donation fund for the same year ; 
ig a Turey Moncuison, F. R. S., President of the Society — 
The annual. at the anni versaries of the Geological Society of 
That of the present — is not a whit 
every way worthy 
