288 ME. a. B. AIEY ON THE DIEFEEENCE IN THE PEOPEETIES OE lEON. 
V. Proportions of the Losses of Magnetism in the Bars of different Classes to the 
Aggregate of Losses. 
Hot-rolled 
longitudinal. 
Hot-rolled 
transversal. 
Cold-rolled 
longitudinal. 
Cold-rolled 
transversal. 
Experiment 1 to 2. 
•197 
•407 
•291 
•106 
h to 6. 
•293 
•236 
•266 
•207 
7 to 8. 
•172 
•509 
•218 
•101 
9 to 10. 
•238 
•225 
•387 
•150 
15 to 16. 
•230 
•272 
•285 
•214 
20 to 21. 
•263 
•215 
•331 
•192 
Means 
•232 
•311 
•296 
•162 
It appears, as I think (though the last line of Table IV. would lead to a different 
conclusion), that there is a real difference in the retentive powers for magnetism among 
the different classes of bars ; and that the cold-rolled bars, under the circumstances of the 
experiments, lose less magnetism, spontaneously, than the hot-rolled bars lose. If, 
instead of comparing the absolute losses of magnetism, we had compared the proportions 
for loss of magnetism in each class to entire magnetism in that class, the difference 
would have been still more remarkable. 
