174 
agents of the two companies named will pay their subscriptions when 
called upon to clo so, and will continue them annually so long as the 
work done is for the good of the different plantation rubber 
companies. 
With thanks in anticipation, 
Yours faithfully, 
C. Taylor, 
Secretary, 
The Incorporated, 
Liverpool School of Tropical Medicine, 
Johnston Tropical Laboratory, 
University of Liverpool, 6th February, igu. 
Dear Sir, 
I send you to-day a copy of a recent book on the prevention of 
malaria in the Federated Malay States by Dr. Malcolm Watson. 
This book has been published by subscriptions from a number of 
Companies shown on a special page, and will be of great importance 
for the prevention of malaria in all rubber and other estates m the 
East. It has been suggested to me that members of your Associa- 
tion miehtlike to buy copies, and I therefore inform you that they can 
be obtained from this laboratory at the price mentioned, namely 7/6. 
I also send you a number of advertisement slips of the book, which 
you might like to issue to your members. Mr. Eric Muller, of the 
Anglo-Malay Rubber Co., has suggested my writing to you. 
Believe me, 
Yours faithfully, 
Ronald Ross, 
Professor of Tropical Medicine. 
The Secretary, 
Planters’ Association, 
Kuala Lumpur. 
H. C. E. Zacharias, Esq., 
Secretary, 
The Planters' Association of Malaya, 
Kuala Lumpur. 
Huttenbach,*Liebert & Co., 
Penang, 20th March, 1911. 
Dear Sir, 
We make free to address you on the subject of the Quarantine 
expenses incurred by Estate coolies arriving from India through the 
Straits Immigration Department, which expenses as you are no doubt 
aware are payable pro rata per head of coolie by the Estates receiving 
such coolies. 
dm, 
