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W. A. (William Allan) Chapple
![W. A. (William Allan) Chapple](/build/images/book-catalog/no-avatar.png)
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INTRODUCTION. Biology is the Science of Life. It seeks to explain the phenomena of all life, whether animal or vegetable. Its methods are observation and experiment. It observes the tiny cell on the surface of an egg yolk, and watches it divide and multiply until it becomes a great mass of cells, which group off or differentiate, and rearrange and alter their shapes. It observes how little organs...
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