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Experimental effects of gases on tree growth

Mounting tree seedlings for measurements

Graph on average height increment

Graph depicting numerical relations between two variables

Graph on manganese effects on seedlings weight

Trees marked for second cut after first ca. 13 yrs previously. N.B. the regeneration especially white pine. Petawawa Management Unit now AFA in Algonquin Pk.

Trenton, N. C. - Spanish moss 29

Trenton, N. C. -Bald cypress & Spanish moss

Trenton, N. C. - bald cypress & Spanish moss

Pinus taeda Trenton, N. C. - Hofmann Forest - loblolly pine on poorly drained land