Heat Engines

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Geology. By charles bird, b.a f.g.s. With over 300 Illustra tions, a Geological Map ofthe British Isles (coloured), and a Set of Questions for Examination. Crown evo. 73. 6d.