IO THE OTTAWA NATURALIST. [ April 
and mode of preservation of the material brought allowed. In 
this way lists have been made and kept for future reference and use. 
Amongst the interesting localities from which fossils were obtained 
during the past year, Mackay’s or Hemlock Lake may be men- 
tioned. From the marine sands underlying the shell-marl deposit 
as well as the fresh-water graveis immediately underneath the 
shell-marl deposit, a number of Portlandia arctica, have been ob- 
tained. The specimens are usually small and in some _ respects 
‘suggest Portlandia minuta. However this boreal variety of ~ 
Portlandia arctica, would scarcely be obtained ina series of sedi- 
ments which were deposited at the close of the period of marine 
submergence, it would rather be found in the earliest deposit of 
the same period. : 
The Utica shales which were excavated in the vicinity of the 
Isolation Hospital have yielded an abundance of interesting forms, 
whilst the Trenton bluffs about Ottawa still teem with organic re- 
mains, many of which are no doubt undescribed. Thereisa great - 
need now of a series of continuous sections carefully measured and 
described, prepared from the numerous and varied outcrops of 
these formations within the Ottawa district. Bi 
At the excursion to Casselman, along the line of the Canada 
Atlantic Railway, the Geological section descended the valley of 
of the South Nation River below the railway bridge to a point. 
where the river takes the turn westward, and specimens of Tren- 
ton (Ordovician) fossils were obtained from the numerous outcrops 
of the limestones along the right bank. The species have been 
determined and lists kept for reference. Besides these about thirty 
small pieces and fragments of pottery were obtained from the old 
camping ground and village site of the aborigines of this country. 
Portions of pots and also of celts were collected with bits of 
charred wood and bark and charcoal, together with numerous 
bones, or rather fragments of bones, probably of some of the deer 
tribe. Some of the charred wood and bark found buried in the 
newest formation just below the turf, or even held within the in- 
terlacing fibres of the roots of the turf growing at this locality 
along the riverside, appear to indicate some forest fire that took 
place long ago whose charred remains are now found buried quite 
as deep as the sherds or bits of potterv. It would lead one te 
