Ernest Evans eBooks

Botany for Beginners. E-book. Formato PDF Ernest Evans   -  Forgotten Books, 2017  - 

I. Living bodies are characterised by the nature of their external form. Their Shape is definite, and bounded more or less by curved surfaces. Non-living bodies are either amorphous, that is without shape or crystalline, that is bodies with a definite shape. Crystals are bounded by ?at surfaces meeting in Sharp edges.