Produced by Miranda van de Heijning, Luiz Antonio de Souza and PG Distributed Proofreaders THE STORY OF A PIECE OF COAL WHAT IT IS, WHENCE IT COMES, AND WHITHER IT GOES BY EDWARD A. MARTIN, F.G.S. 1896 PREFACE. The knowledge of the marvels which a piece of coal possesses within itself, and which in obedience