NOTES 



This book is based upon a series of articles which appeared 

 in The Manufacturing Chemist (Messrs. Leonard Hill 

 Limited, London) in June, July, and August, 1937 (Vol. 8, 

 pp. 175-180, 211-216, 254-257). 



References to literature not cited in full in the text or in the 

 list at the end of the Chapter in which they are mentioned, are 

 distinguished by a capital letter indicating the list in which 

 they will be found. This has been done to avoid duplication, 

 while ensuring that each list bears broadly on one subject. 



The quotations ascribed to Beaume are taken from the 

 English translation, by John Aikin, of the second edition of 

 Beaume's book on Chemistry. (Warrington, 1778). 



xu 



