248 
B. A mountain-chain farther to the north, which can be continued 
from N. W. New-Guinea over Waigeoe and Salawati in the eastern 
Moluccas and in which the late-tertiary sediments are sometimes 
folded intensively. 
Besides folding, very numerous fractures form the principal cha- 
racteristic of the tectonics of the Eastern Moluccas. Along with the 
many that are known, we may e.g. mention a great number on the 
Soela-islands, which by the occurrence of hot springs and by 
topographical features are often easy to trace. Also along the 
Sibella-mountain on Batjan numerous hot springs occur. Some 
fractures are volcanic fissures, however, as has been observed above, 
the fissures must often be later than the older volcanic rocks, so 
that it is not allowed to connect the places, where these rocks are 
found in a region that for the greater part is covered by the sea, 
by volcanic fissures. 
Physics. — “An experiment of Maxwern and Aupkre's molecular 
currents.” By Dr. W. J. pr Haas and Dr. G. L. ve Haas-— 
Lorentz. (Communicated by Prof. H. A. Lorentz.) 
(Communicated in the meeting of June 26, 1915). 
Einsteins and pe Haas, who proved experimentally the existence 
of Amprre’s molecular currents, mentioned in their paper‘) that 
RicHarpsoN has already tried, though unsuccessfully, to give a similar 
proof. 
In connection with this it is interesting, that so early as 1861 
Maxwett.”) made an experiment for the purpose of deciding whether 
a magnet contains any rotatory motion. This experiment was arranged 
as follows: 
A eoil can turn about a horizontal diameter 55’ ofa ring, which 
again can rotate about its vertical diameter. Let, in case the coil 
does not rotate, the axis CC” fixed in it coincide with the vertical one. 
If in the coil there are rotatory motions about an axis perpendicular 
to BB’ and CC” and if the ring turns about its vertical diameter, 
the axis CC’ must deviate from the vertical. Further particulars on 
the experiments are not known. MaxwerL mentions only that he 
has not been able to detect the deviation in question, even when 
the coil had an iron core. 
1) Proc. Acad. Amsterdam. 18. p. 696. 
2) MAXWELL, Electricity and Magnetism, Vol. IL, p. 203. 
