American Journal of Science. 11 
New and most important work for all those con- 
cerned in Iron Works. 
Zz ) J. DOBSON, 
a ~ No. 106 Cuestnut Srreet, PuitapenPusa, 
Proposes to publish by subscription, the following most important 
work, 
A COMPLETE THEORETICAL AND PRACTICAL TREATISE 
ON THE 
MANUFACTURE OF IRON. 
Arts, at the Franklin Institute. 
It is scarcely necessary to speak of the value of a work such as 
this, which must be of the greatest interest to the Practical Iron 
Master, as well as to every one concerned, either directly or indi- 
reétly, in this most important subject. The great French work of 
|Le Braye and Water, ing confessec most 
drawn to a scale, which will enable any one to con. 
may be required. The E 
\the Smelting of Iron with Anthracite Coal, by Mr. Roserts, will 
be found very interesting ; it is the production of a gentleman of 
talents, and of sound judgment and unwearied research, who, highly 
favored by his position, has given the subject much attention. The! 
‘numerous Analyses of the Coal and Iron Ores, both of our own 
” Barope, will afford much interesting and useful infor- 
on; while the statistical portion will be drawn from the most 
c sources. Ricwarp C. Tarzor, Esy-, a gentleman well] 
