J. Wharton on the Manufacture of Spelter. 175 
Ordinary red bricks, 13,000 
9 inch fire bricks, 11,000 
Fire bricks of special patterns, 71,364 Ibs. 
Cast iron for furnace fronts, doors, braces, &c., 37,320 : 
Wrought iron for straps, bolts, &c., 1,138 “ 
Wrought iron for tools (plus 22 Ibs. cast steel) 1,267 
1863, and this not only nor principally because I con- 
ducted the business with asin senate and maintained a 
h standard of efficiency and discipline among the workmen, 
t mainly because labor is now much higher than it then was, 
and because no ore of equal quality can now be obtained so 
cheaply in a spot so favorable for its manufacture. _ a 
The quality of the spelter made in this establishment has 
always been excellent, and has caused it to be Pe aaueane ¢ 
oth es, . 
4 /°t8; the sample No. 4 there mentioned was made by me in 
‘he year 1859, in the trial furnace spoken of in the earlier part 
paper. : 
& 
