1894-95.] Mr J. C. Beattie on Alloys in a Magnetic Field. 487 
Plate IV. 
! Length : 27 \ 
Breadth : 12 >mms. 
Thickness: 1 * 2 ) 
Temp. 23° C. 
Field. 
Trans, effect. 
An 
\/ An 
Ci{An)^ c^{An)i -■ 
^1 
= trails, effect. 
5,610 
- -1130 
•0276 
•1661 
11,050 
- -1633 
•0606 
•2461 
-•69 
+ •51 
14,620 
- -1896 
•0846 
•2909 
- -69 
+ •50 
15,640 
- -1949 
•0911 
■3018 
- -69 
+ •53 
17,000 
- -19 
In diagram I., fig. 1, the field strength in c.g.s. units is measured 
along the x axis ; the transverse effect per unit current along the y 
axis ; curves I, II, III, IV give the relation of the transverse 
effect to field strength for the plates so numbered. B refers to a 
plate of pure bismuth. Antimony’s corresponding curve would lie 
on the opposite side of the x axis. Compare with table on page 
482, and with remarks on pages 483 and 484. 
If fig. 4 be taken as given in natural size, then II, III, B are 
half natural size, I is -J natural size. 
In diagram II., fig. 4, the relation between'the variation of resist- 
ance and the field strength for Plates 1., II., III., IV. is given. 
The X axis is the axis of field strength : the y axis that of resistance 
variation per unit current as given by the galvanometer reading. 
The scale is the same for all the figures. 
It will be noticed that the figure I is similar to the corresponding 
figure for pure bismuth. Figures II, III, IV, on the other hand, 
are straight lines. 
