Because he is especially built for it the Muscular is more active than any other type. Without muscles no organism could move itself from the spot in which it was born. Biology teaches us that the stomach was the first thing evolved. The original one-call organism possessed but one function--digestion. As life progressed it became necessary to send nutriment to those parts of the organism not touched by the stomach. For the purpose of reaching these suburbs there was involved the circulatory or Thoracic system, and this gave rise, as we have seen in the previous chapter, to the Thoracic type. Movement and Development As time went on movement became necessary, full development not being
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