Vili Preface 
average, about once in five weeks; and to M. Perronne, 
a French gentleman who was buying musk in A-tun-tsi, 
and Mr Edgar, English missionary in Batang, I was also 
indebted for assistance. 
Finally I must record the deep debt of gratitude I owe 
Dr Guillemard, who has edited the book and, during my 
absence, seen it safely through the Press. Dr Guillemard’s 
great experience of travel not in Asia only, and his wide 
knowledge of natural history, were always at my disposal, 
an inexhaustible fund of fact and advice to draw on. 
Numerous alterations and valuable suggestions are due to 
him, and without the time he willingly expended on it, 
the work would have been much less presentable. 
My one hope is that by the time these lines appear 
I shall be back again in ‘the Land of the Blue Poppy.’ 
CAMBRIDGE 1913. 
