vi PREFACE TO THE SECOND EDITION 



Bomor Hadji Awang the senior has been very reticent 

 in disclosing the secrets of his profession, but his 

 colleague To* Bomor Enche* Harun bin Seman has 

 been most generous. Although much information has 

 been obtained first-hand, I have borrowed largely from 

 the works of others ; to them I can only express my 

 obhgations by recording, as far as possible, their names 

 in the text and in the hsts of references. Want of a 

 reference Ubrary and the absence of a chemical labora- 

 tory in a native State such as Kelantan have been 

 serious handicaps. The revision was completed on my 

 retirement from the Colonial Medical Service. I hope 

 that others still on the active list may be incited to 

 continue and complete further investigations. 



Many Malay friends have made this field of research 

 a pleasant tilling ; towards them I shall always cherish 

 feelings of affection and gratitude. I am again indebted 

 to my friends Mr. W. W, Skeat, Mr. 1. H. Burkill, 

 and Dr. H. E. Durham, Sc.D. (Cantab.), F.R.C.S. 

 (Eng.), M.B., B.C., Fawang jugaj for much help. I 

 must thank Major J. C. Moulton, O.B.E., B.Sc. (Oxon.), 

 Director of Baffles* Museum and Libraiy, Singapore, 

 for much kindness, also Mr. A. F. Worthington, British 

 Adviser, Kelantan ; but I am more especially indebted 

 to Mr. H. W. Thomson, British Resident, Pahang, for 

 his kindness in reading and correcting the manuscript, 

 to Dr. Winstedt in helping so much with the magic, 

 and to Dr. Durham in so generously contributing to the 

 section on Tuba. Sir Wilham H. Willcox, K.C.I.E., 

 C.B., C.M.G., M.D., F.R.C.P., has assisted with analyses 

 and given kindly encouragement. Mr. C. Otto Blagden, 

 Reader in Malay and Dean of the School of Oriental 

 Studies, London Institution, has also given some much 

 appreciated help. 



Bath, 1923. J. D. G. 



