z 
4) 
of Alloys of Bismuth and Tin, D7 
tin, is always accompanied by a diminution of the diamagnetic 
properties of the metal. 
As fig. 2, which represents the relation between magnetic 
susceptibility and composition, shows, this effect is most 
marked in cases where the proportion of tin is small, the 
susceptibility of an alloy containing 10 per cent. tin being 
only one-half that of pure bismuth. 
When the proportion of tin is greater than 10 per cent., 
the further addition of tin is accompanied by a diminution of 
the magnetic susceptibility, which is proportional to the 
amount of tin added. 
Tn all cases the magnetic susceptibility & is independent 
of the strength of the magnetic field in which the metal is 
placed. 
Fig. 2. 
—+-—___—_______ 
| 
él 
ae | 
| 
en 
} 
| 
| | Eee 
) 10 20 30 40 
The electrical and magnetic properties of these alloys have 
new been extensively investigated, and it may be observed 
that the nature of the results obtained in these experiments is 
quite general. That is to say, when a very small amount of 
tin is added to pure bismuth a considerable change in all the 
physical properties is produced. On the other hand, the 
addition of bismuth to pure tin is always accompanied by a 
gradual change in the physical properties, the metal so long 
as it does not contain a considerable excess of bismuth 
behaving as though it were a simple mixture of the two 
constituents. 
Finally, I desire to express my thanks to Prof. J. J. 
Thomson for his ever ready advice and suggestions. 
Cavendish Laboratory, 
April 26th, 1904. 
