Two centuries of Cornwall life.

Bibliography: p. [4]

Annual report of the Ontario Department of Mines.

Issued by the Bureau of Mines, 1891-1919; by the Dept. of Mines, 1920-1970

Annual reports of the dairymen's associations of the province of Ontario.

Also included in the Annual report of the Ontario Department of Agriculture, which can be seen for later numbers.

Reprint of a report on the origin, geological relations and composition of the nickel and copper deposits of the Sudbury Mining District, Ontario, Canada /

A revision of the original report of 1904.

Annual report of the Farmers' Institutes of the Province of Ontario.

1892-1915 are found also in the Sessional papers of Ontario, 1893-1916.

St. Marys Falls Canal, Michigan. Statistical Report of Lake Commerce Passing through Canals at Sault Saint Marie, Michigan and Ontario

Mode of access: Internet.

The mining industry in that part of northern ontario

Mode of access: Internet.

Geological reconnaissance of a portion of Algoma and Thunder bay districts, Ontario,

Appendices: I. Notes on some fossils from the Cambro-Silurian and Silurian rocks of the Albany river drainage system in northwestern Ontario, by J. F. Whiteaves.--II. Lists of insects, by J. F. Fletcher.

Annual report of the Poultry Institute of the Province of Ontario.

Second report covers the period 1906-1907.

Report relating to the registration of births, marriages and deaths in the province of Ontario ...

Mode of access: Internet.

Annual report of the Ontario Vegetable Growers' Association.

Mode of access: Internet.

Proceedings of the ... annual convention of the Ontario Educational Association.

Mode of access: Internet.

Report of the Minister of Agriculture, province of Ontario, for the year ending ...

Report year ends Mar.

Annual report of the Statistics Branch, Ontario Department of Agriculture.

Issues for 1929- published as: Sessional paper of the Legislative Assembly, no.22-

Biology of the leech Actinobdella inequiannulata Moore, 1901 (Annelida: Hirudinea: Rhynchobdellida: Glossiphoniidae), parasitic on the white sucker, Catostomus commersoni Lacepede, 1803, and the longnose sucker, Catostomus catostomus Forster, 1773, in Algonquin Provincial Park, Ontario, Canada

Actinobdella inequiannulata was found on the white sucker. Catostomus commersoni, and less frequently on the longnose sucker, Catostomus catostomus, in Algonquin Provincial Park, Ontario, Canada. Catostomus commersoni parasitized with Act. inequiannulata was collected from July to October 1973 and May to October 1974. In May and October, less than 3% of the fish carried leeches. In July, 80% of the fish were parasitized with an average of 1.5 leeches/fish. Observations on leech weight suggest that young leeches attach to fish from May to September, some mature in July, and a second generation of leeches reparasitize the fish in August and September. The mean size of leeches on suckers increased from May until July, after which the size remained relatively constant. Leeches produced characteristic lesions on the opercula of suckers. Fully developed lesions on fish opercula produced by aggregated leeches had varying amounts of central erosion, extravasation, dermal and epidermal hyperplasia, and necrosis.