194 
7. From the Loio Moor iron, several bars broke with an 
average weight of 23 cwL 2 qrs, ; the grain of the fracture 
close, with an appearance strong, and deflection great. 
8. From the Elsecar iron, several bars broke with an aver- 
age weight of 24 cwt. 2 qrs. ; the fractures presenting a very 
close light gray or blue grain, the deflection being slight. 
The following are experiments which were made with mix- 
tures of pig iron from difi*erent makers, which present results 
as curious as they are interesting, especially to the iron 
founder. 
9. February 20th, 1841. Two bars were cast from five 
parts strong No. 3 pig, Low Moor, and one part strong 
No. 3 pig, Elsecar, which broke with a weight of 26 cwt 
each ; fracture close grained, and rather white or light gray. 
Again, May 8th, 1841. Two bars were cast from five 
parts strong No. 3 pig. Low Moor, and one part strong 
No. 3 pig, Elsecar, which broke with 30 cwt. each ; the 
grain of the fracture strong and very uniform. The metal 
was run in a good hot fluid state. 
Other two bars were cast when the metal was cooler, and 
consequently not so fluid, from the same mixture, which broke, 
one with 23 cwt. 2 qrs., and the other with 27 cwt. 2 qrs. ; 
the fractures had a rich fibrous grain, but were specked with 
small air bulbs. 
10. February 23rd, 1841. Two bars were cast from five 
parts strong Bierley No. 3 pig, and one part strong Elsecar 
No. 3 pig, which broke with 30 cwt. each ; the grain of the 
fracture strong and rather close. 
11. February 21st, 1841. Two bars were cast from four 
parts strong No. 3 pig, Bierley, and one part strong No. 3 
pig, Elsecar; one bar broke with 30 cwt., and the other with 
33 cwt. ; the fractures were strong or coarse, and fibrous in 
the grain, and of a dark blue or gray colour. 
Note These bars were cast while the metal was in a 
good hot and fluid state. 
