64 FOSSILIFEROUS HiEMATITE NODULES IN LEICESTERSHIRE. 
This is not a materialistic or ail atheistic doctrine. The 
unfolding of potentialities implies that those potentialities 
already exist, and they are functions not of matter but of 
the immaterial force. The potentialities hidden in an acorn 
will mould its development into an oak, but nothing like that 
oak exists in the matter of the acorn. The moulding power 
is in the force-wave, of which the acorn represents the poten¬ 
tial, and the oak the kinetic phase. And these force-waves 
can only be ripples of the one great central and eternal 
force-wave in which must co-exist all capacities and powers 
exhibited in the universe, including conscious mind and all 
which that implies. 
ON THE OCCURRENCE OF FOSSILIFEROUS 
HAEMATITE NODULES IN THE PERMIAN BRECCIAS 
IN LEICESTERSHIRE, 
TOGETHER WITH SOME ACCOUNT OF THEIR ECONOMIC 
VALUE, Ac. 
BY W. S. GliESLEY, F.G.S. 
(Continued from page 37.) 
Theory No. 2 .■—This requires far less appeal to the 
imagination than does No. 1. If we examine a typical 
series of the luematites side by side with a like set of nodules 
of clay ironstone (siderite or carbonate of iron), taken from 
the shales and clay beds of the coal measures, it will be seen 
that a great similarity exists in the two series. This resem¬ 
blance is most marked in the external forms, dimensions, 
surface, and internal hollows, cracks, organic markings, and, 
in the case of a few, in colour, sp. gr. hardness, &c. It is 
in their structure, colour, lustre, and especially in their weight 
and hardness, that the greatest difference is to be observed. 
Specimens occur in the superficial deposits of the district 
whose derivation may, I consider, have either been the 
Permian beds or direct from the coal measures, they are so 
little altered. The colour of the surfaces, however, of these 
doubtful samples is some shade of red or brown. Why, 
then, may not these heavy, hard, steel-coloured, organised 
nodules and bits of ore be altered coal-measure ferrous carbon¬ 
ates? The only original thing about them is their shape (in 
the case of whole nodules). The mineral iron and the 
