Properties of an Extensive Series of Alloys of Iron. 19 
‘induction in all fields up to the highest here tried, viz. 60 units: from the relative 
area of the two curves the hysteresis loss will also be seen to be less. The values 
of the magnetic constants of the two substances deduced from these curves are as 
follows :— 
TABLE XII. 
Magnetic ConsTaNntTs OBTAINED WITH SLENDER RODS TESTED MAGNETOMETRICALLY. 
Mark Magneueing FE Remanence. | Coerciye Force. geen 
8. C. I. 60 17,750 8,250 11 8,230 ergs. 
1167 H 60 18,250 11,000 0:6 HAM 5 
It will be noticed that the coercive force of the aluminium-iron is little more 
than one-half, and the hysteresis loss only five-eighths of the Swedish charcoal-iron, 
albeit its maximum induction is somewhat higher. The remanence, reckoned, 
OAS Se See ee) 
JOSE Sess LaLa) 
Ds ea 
DOI BAR arene 
CODES CSSSS0L Sov dieooeaoo 
COO OSes aac 
CIUDAD OE S eee eAn DD abeoe 
pt tt tatoo Fe ig 
SRR RRSP 
LOL iee ADDO 
PCCD cou Oe OSes oe 
SLO DDOSSe ee Soe does 
BERR eee ee Pee 
WOOO ee OU Aes 
oe MOOS eee 
PEPE et 
Soto oo 
OULD ee eee See 
SS Se ee a eee eee 
eR 
a ida Ac i Rs 
ST CE este et esos 
Fre. 8.—Cyclic curves obtained from slender rods of aluminium-iron and silicon-iron 
alloy compared with Swedish charcoal-iron. 
of course, from the point where the sloping axis is cut, is seen to be higher in 
the aluminium-iron ; this is unexpected, but experiments with the ring of S.\C. I. 
gave a higher remanence than with the above rod (see Table VII., p. 413). The 
