657 
In liquid air the magnetic increase of resistance, however, appears 
to be much greater for Aig), just as was found to be the case in 
liquid hydrogen’). 
10000 42500 Gaus, 
tee 
0 «000 5005 7500 10 
— If 
Fig. 5 
For H=11090 we find at 
Biar Bip] Bin 
EEEN eG 7,5 3,25 
Wo 
w' 
== Ne 19,7 4,7 
== Oe 4 
we 
For Bij the resistance temperature coefficient with no magnetic 
field is negative, which undoubtedly points to the presence of impurity. 
At T= 289° K the specific resistance of 52,7 is about 1,5 X 10°, 
and for Bij; 2,38 < 10° C.G.S. 
tj H. KAMERLINGH ONNES and Benet BECKMAN, Comm. NO. 129a 
45 
Proceedings Royal Acad. Amsterdam, Vol. XY. 
