. A history of British forest-trees, indigenous and introduced. consi-derable age and size ; we have succeeded, in several in-stances, where the tree was about six inches in diameter,and upwards of twenty feet high ; such plants, however,possessed, as Sir H. Steward expresses it, all the pro-tecting qualities11 likely to ensure success. It is also aneligible tree to plant in hedge-rows, where protection fromthe prevailing winds is desired, as it carries an erect stemand wide head, even in the most exposed situations; andwe would recommend its insertion as a principal in narrowbelts made for th
. A history of British forest-trees, indigenous and introduced. consi-derable age and size ; we have succeeded, in several in-stances, where the tree was about six inches in diameter,and upwards of twenty feet high ; such plants, however,possessed, as Sir H. Steward expresses it, all the pro-tecting qualities11 likely to ensure success. It is also aneligible tree to plant in hedge-rows, where protection fromthe prevailing winds is desired, as it carries an erect stemand wide head, even in the most exposed situations; andwe would recommend its insertion as a principal in narrowbelts made for the same purpose, taking care to keepthem well thinned from an early age, otherwise, a toler-able tree, or one able to resist the blast, can never beexpected, as Ave see too frequently exemplified in thosestarved-looking belts, where thinning has either been en-tirely neglected, or only applied after the trees, by theirproximity to each other, have been ruined in constitutionand drawn up to mere poles, rendering them incapable, THE SYCAMORE, OR GREAT MAPLE. 21. from the want of the protecting qualities, to resist thesudden influx of the air and vicissitudes of the seasons. A curious anomaly inregard to the cotyledonsof the Sycamore is men-tioned by Professor Hens-low, in the Magazine ofNatural History, whichwe have frequently ob-served since our attentionwas directed towards thesubject. In many young-plants he found the co-tyledons to amount to asmany as four, but in such cases they were all pro-portionally smaller than in those which bore the normalnumber (2) ; in others they were three, two of whichwere less than the third; and in others, again, one orboth cotyledons were merely cloven down the middle, thusshowing that the increase of cotyledons did not originatein any extra developement of the organs themselves, butwas merely the result of the subdivision of the normalnumber. The principal varieties cultivated are, 1st. The YellowVariegated Sycamore, or Costorpliine Plane {Ac.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectforestsandforestry
