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Rapid Growth Of Towns: The development of the steam engine based on power from coal greatly contributed to the establishment of a whole range of new industries and to the rapid growth of towns to house an expanding population of factory workers. As the transport of manufactured goods became more important, canals, railways and roads cut across the land. The search for building materials accelerated as world population grew from about 900 million in 1800 to 1,650 million in 1900.
One undersized boy felt much better when the school physician explained that the X-ray pictures of his wrist bones showed that he had not yet reached his nhysical maturity and that he would undoubtedly grow taller. Rapid acceleration in the rate of growth puts an additional strain on the vital organs and requires protection against overexertion. Uneven growth may create problems of awkwardness and self-consciousness. Inappropriate growth, as in the case of the boy who develops feminine contours, presents still more serious problems of adjustment.
Once a framework has been formed, the most important objective is to keep the climber in check—lateral shoots may grow up to 12ft in a single year and unless this over-exuberant growth is pruned, the plant can soon become a jungle of stems and may grow too large for its allotted area. Severely pruning a wisteria during winter will only encourage even more rapid growth. |
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