Mechanical seeder at Kirkwood. Thessalon

Mechanical seeder at Kirkwood. Thessalon

Mechanical strip thinning in 22yr old jack pine. N.B. dead jack pine in unthinned stand used for markers in aerial fertilization trial. Peshu Lake

A mechanical tree lifter. Lifting.

Mechanical weeder used in drill sown seed beds.

Memorial to the 100 millionth tree planted by K.C. Irving at Veneer Gate, Black Brook, in 1977. J.D. Irving

Mesa - basalt & sedimentary red rock, Nipigon, Ont.

Microsection of Alnus nodule to show the infected cortical cells; n.b. the mycelia of the actinomycete which terminate in the vesicles. cf. slides # 213-217

Microsection of the cortical cells of an Alnus nodule to show the vesicles (stained red) within the cell which are thought to be the site of Nitrogen fixation

Microtus hole in the Ah of the profile at the Dunlap Observatory, Richmond Hill; cf. slides # 140, 162