Heat

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. IT was with considerable hesitation that I sanctioned the Publishers' proposal to print a very large number Of copies Of the first edition Of this work. Some of my reasons will be found in the former Preface, reprinted below especially those depending on the fact that the work was written, in occasional intervals Of comparative leisure, during several very busy years.