Cronartium comptoneae rust showing aeciospores on jack pine.

Cronartium comptoneae rust showing aeciospores on jack pine.

Cronartium comptoniae (sweetfern blister rust) on 2 year jack pine. N.B. aeciospores.

Cronartium comptoniae (sweetfern blister rust) on 2 year jack pine. N.B. aeciospores.

Hard maple, 64ft clear stem; Height 110ft. DBH 17in, 400 fbm/tree. Geo. Barrie woodlot, Highway 97 near Ayr.

General view of geography in Barrie woodlot. Highway 97 near Ayr. N.B. White pine.

Bending of "whips", i.e. slender understory stems exposed after a selection harvest. Geography Barrie woodlot, Highway 97 near Ayr.

Diagram illustrating silvicultural options re: composition, density, productivity, and spacial.

Blake MacDonald's experiment to show the impact of water supply: weekly vs. fortnightly watering on growth of hard maple seedlings.

Blake MacDonald's experiment to show the impact of water supply: weekly vs. fortnightly watering on growth of hard maple seedlings.