428 E. S. MOORE 
shows little or nothing that would justify a student of the recent algae in refer- 
ring them to a modern genus, family, or class. I infer that the main organism 
deserves comparison with Cryptozoon proliferum Hall from Saratoga, New 
York, and one photograph is a bit suggestive of Walcott’s Collenia? frequens 
as shown in his Plate 1o, Fig. 3. Unless more definite structure is revealed by 
future sectioning it seems to me that about as far as we can safely go with these 
Hudson Bay fossils is to say that they are probable algae. 
Another structural feature in the limestones of the Belcher 
series, and one which may also depend upon organic agencies for 
its origin, is a remarkably regular and uniform banding, which 
Fo ig 
Fic. 15.—Very distinctly banded limestone on Innetallung Island. It is believed 
that the regularity of this banding may be due in some way to the action of algae. 
is due to alternating very fine-grained and coarser-grained layers 
of limestone, more or less silicified, especially along the bedding 
planes (Fig. 15). As seen under the microscope some very small 
fragments of twinned feldspar scattered through the fine-grained 
layers and grains of quartz are fairly common. In the hand speci- 
men the rock looks more like a cherty quartzite than a limestone, 
it is so dense and fine-grained. ‘The alternate bands weather more 
rapidly, producing a ribbed effect. The bands are often extremely 
regular for considerable distances and usually run from one-half 
inch to three-quarters of an inch in width. It is suggested that 
this banding may be due to the seasonal work of low forms of life 
