GEOLOGY OF HALIFAX AND COLCHESTER CO’S—HONEYMAN. 37 
road and on the shore not far from the fort. Not far from the 
Cross Roads—Cow Bay and Eastern Passage Roads—there are 
fine exposures of strata from this onward, the last of them 
extending seaward and forming Devil Island. While the mass 
of these rocks are argillites I noticed among the first of the 
ledges a rock of a different character. It seemed to be a quartzite 
of appearance different from any that I had observed elsewhere 
in this formation. On applying an acid there was a brisk 
effervescence. There is about 18 per cent. of calcareous matter 
in the rock. I have called it a “Calcareo-quartzite,” vide list 
in previous paper. The next noteworthy feature in some of the 
strata is the occurrence of the singular forms that I have 
noticed as occurring in the rocks below York Redoubt and called 
“Discinoid” forms. Returning to the Cross Roads, and taking 
the road to Cow Bay, a glaciated outcrop of argillites was 
noticed at the Episcopal Church, and a fine exposure in a brook 
crossed between the church and Cow Bay. 
Cow Bay. 
There was only drift observed at the Bay. To this attention 
has already been fully given. Crossing over to the east of the 
bay, outcrops of rocks were seen. On the shore are interesting 
ledges. The rocks are generally argillites. Grey ones were 
observed, singularly hollowed by the action of the waves. These 
were found to be largely calcareous — “ Calcareo-quartzite.” 
The existence of these led me to expect fossils. I thought I had 
succeeded in finding them in a fine exposure of argillites. They 
were full of “ discinoid” cavities, in layer upon layer, lying at 
right angles to the slaty clearage. My associate, the late W. 
Sawers Stirling, and I collected specimens. In his collection 
were afterward found two specimens which were peculiar. One of 
these has concentric rings such as I have seen in Discina; the 
other is perfectly round and has an eccentric prominence, which 
I supposed to be the cast of the foramen. The finding of these 
led me to re-examine the rocks with the forms. I did not succeed 
in finding any resembling the two in question. I have still 
doubts of their organic origin, 
