3-i8 



Siphonotreta Scotica was seen in this bed, which averages abcHit an inch 

 in thickness. Tlie bed immediately underlying this ban 1 — the zone of 

 Conularla Trentonens'is, Hall — was then examined, and it was not long 

 before several fine individual's were I'ound of tlie form I'eferred to Dr. 

 Davidson's species. This bed is some twelve inches in thickness, and 

 consists of a dark, somewhat bituminou:?, impure limestone, holding 

 Sijjhonotreta Scotica, Davidson ; Lbigula elonyaia, Hall ; Ascujhus Can- 

 adensis, Chapman ; Calymene senaria, Conrad ; Lepiiena sericea, Sow- 

 erby, etc. 



As will be seen by comparing the lists of fossils already published 

 by the club, Lingula elovgaia and Discina Pelopea, are both forms new to 

 the TJtica formation, and to the lower portion or oldest measures 

 the same. 



Post-Tertiary. — Owing to the activity on the part of our worthy 

 City Engineer, Mr. Ilobert Sartees, C. E., and our civic authorities, in 

 carrying on extensive sewage and other woi'ks, the student of Geology 

 has had a great many openings and sections exposed in the Post Terti- 

 ary strata of Ottawa. On Rideau and Cumberland streets interesting 

 sections were obtained in some i)]aces to a deptli of sixteen feet. The 

 following is one of the sections taken on Cumberland street, corner 

 Daly avenue : — 



No. 1. Light yellow sand 2 ft. in. 



2. Small rounded pebbles and sand 4 



3. Yellowish grey s^nd 10 



4. Bluish grey sands (fossiliferous) 2 



5. Stiflf blue clay " 2 to 3 



16 ft. 4 in. 



17 ft. 4 in. 



In Nos. 1, 2 and 3 no fossils were found, but in 4 and 5 the fol- 

 lowing species occurred : — 



I (<■/) Notica aff'inis, Gmelin. 

 In No. 4 \ {^) Saxicava rugosa, Linnseus. 



( (c) Portlandia arctica, Gray. 



y ^ ^ f (a) Saxicava nigosa, Linnseus. 

 \ {h) Portlandia arctica, Gray. 



