PREFACE
ix
devised by another chemist. Another reason for limiting the number of books included in my list of titles is to be found in the extensive Bibliography appended to Professor Laurie's 'The Materials of the Painter's Craft.'
No very great differences will be found between the present and the preceding edition, but I have endeavoured, not only to introduce new matter which I think of importance, but to simplify and make more exact the treatment of the various subjects discussed ; and, in fine, to carry out more fully the plan set forth in the Preface (here reprinted) to the First Edition.
Arthur H. Church.
Kew Gardens,
June 2, 1914.
June 2, 1914.
