Pamphlets on Forestry, Volume 41991 |
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Page 392
... observations were begun too late , sections from tree II on May 13 , 1910 , showed growth in such an advanced state that cambial activity must have begun fully as early the previous year . As regards cambial awakening in trees A , B ...
... observations were begun too late , sections from tree II on May 13 , 1910 , showed growth in such an advanced state that cambial activity must have begun fully as early the previous year . As regards cambial awakening in trees A , B ...
Page 398
... observations . As regards the theory advanced by FRIEDRICH concerning two periods of maximum growth in trees , little can be said . The second period if present in Pinus rigida must be the minor one , inasmuch as the ring was on an ...
... observations . As regards the theory advanced by FRIEDRICH concerning two periods of maximum growth in trees , little can be said . The second period if present in Pinus rigida must be the minor one , inasmuch as the ring was on an ...
Page 419
... observations made by SEELEY ( 45 ) near Chicago show how effective such atmospheric drainage may be even in dis- tricts whose range of elevations amounts to but 15 feet ( 4.5m ) . He found that the hilltop averaged , on the night of the ...
... observations made by SEELEY ( 45 ) near Chicago show how effective such atmospheric drainage may be even in dis- tricts whose range of elevations amounts to but 15 feet ( 4.5m ) . He found that the hilltop averaged , on the night of the ...
Contents
The Huron River valley | 402 |
their development and ecological conditions | 360 |
The bogplant societies | 429 |
4 other sections not shown
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2d whorl 4th whorl abundant acidity Alnus aments apex apical shoot Aronia average basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledonous drainage drained factors Fagales fiber bundles foliar ray forest formation genera glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lobes lower mature Michigan moraine occur parenchyma parenchyma cells peat perianth periderm phloem pine Pinus piƱon Pinus rigida pith rays plant societies Platanus plates present Quercus radial region resin canals roots rows Salix sapwood scattered sclerenchyma sclerotic sedge shrubs sieve tubes soil species specimens sphagnum stem stone cells substratum surface swamp tamarack temperature thick tissue tracheids trees trunk twigs tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone