262 The Ottawa Naturalist. [February 



The late Dr. G. M. Daimon. This report cannot conclude 

 without a slight reference to the great loss which the geological 

 section of the Club has sustained in the death of one who tor three 

 years was the President of the Club and the foremost Canadian 

 geologist. In Dr. Dawson the Club and the members of the 

 geological section had one who was .ever ready to give them the 

 benefit of his judgment, criticism and experience in the discussion 

 of points of interest in the geological structure of our district. He 

 never failed to encourage and stimulate our members to unraval 

 and describe the geology of this interesting section. 



The following list of fossil sponges from the geological forma- 

 tions about Ottawa has been taken from among my notes on the 

 palaeontology of this district taken during the past twenty years, 

 and may not be uninteresting to local geologists. 



Quaternary. 

 Pleistocene System. 



Green's Creek formation (Marine fossiliferous clays, "Leda clay"). 



1. Craniella Logani, Dawson. Odell's brickyard, Ottawa East, Ont. 

 Paleozoic. 



Ordovician Systeiti. 

 Utica formation. 



2. Stephanella sancta, Hinde. Porter's Island, Montreal Road, 



Albert Street, near Bank Street, Ottawa City, Ont. 



3. Cyathophycus reticulatus, Walcott. Gloucester, Ont. 



4. ,, nidiformis, nobis. MS. Somerset Street East, City. 



5. ,, subsphericus, Walcott. ,, ,, ,, 



Trenton formation. 



6. Astylospongia parvula, Billings. Concession and Division Streets. 



7. Brachiospongia digitata. Marsh. Foot of Parliament Hill. 



8. Steliella crassa, Hinde. Division Street, Ottawa. 



9. ,, Billingsii, Hinde. ,, ,, 



10. Palseospongia Trentonensis, var. Ottawaensis, n. var. Division 



Street, Ottawa. 



Birdseye and Black River formation. 



11. Stromatocerium rugosum. Hall. Hull and Ottawa quarries ; also 



found at base of the Trenton formation. 



Beekmantown or Calciferous formation. 



12. Cryptozoon calciferum, Dawson. March, Ont.; on Ottawa, Arn- 



prior &. Parry Sound Railw .}'. 



H. M. Ami, Leader. 

 Ottawa, Jan. 14th, 1Q02. 



