* 
352 Tiftorical Remarks relative to 
‘ Bi75° tons of crude iron will then be neceflary to ¢ 
form 35000 tons of bars at 20/. £460,000 
42250 tons caft into cannon, cylinders, machi- 
nery wares, &c. at 14/. ~ = 591,500 
109000 tons amount of the native manufacture of 
iron at this period “ - £.1,291,500 
The extenfive manufacturers of this country 
have for many years paft demanded an additional 
fupply of foreign bar iron. This has been chiefly 
received from Ruffia and Sweden, and the an- 
nual quantity may be averaged for the laft 20 
years at 70000 tons, at 18/, per ton, - £ 1,260,005 
£, -2,5515500 
This may be taken as the annual amount of one 
~ yaw material, the chief part of which becomes 
more valuable in an uncommon ratio, by fubfe- 
quent labour. 
Amount of the native manufaQure at the pe 
ginning of laft century, when the raw material 
was exported in quantity = + ‘1,800,060 
Balance in favour of this period ~ - £.751,500 
exclufive of the additional yalue ftamped upon iron in the now 
extenfive operations of flitting it into rod iron for nails, roll- 
ing it into hoops, and converting it into fteel. In thefe 
manipulations value is gained as follows: Rod iron-3/. ros. 
per ton. Hoops 7/. Bliftered fteel 72. to gf. Tilted fteel 
1o/. to 12/7. and German fteel 25/7. to 28/7. per ton. Caft- 
ficel according to the fize of the bars 30/7. to 45/. per ton. 
Some of thefe operations are attended with a wafte of metal, 
though not nearly in the proportion of making bar iron fron 
pig iron. The manufacturer of fteel alfo buy his irom at 
the 
