3 
displayed much interest and were of great assistance to the 
expedition. The present Governor of the State of Amazonas, 
His Excellency Coronel Antonio Bittencourt, manifested much 
sympathy with the work, and extended an invitation to the expedition 
to return to Manaos to complete the various researches which were 
left unfinished. 
The Directors of the Servico Sanitario, Dr. Alfredo da Matta 
and Dr. Miranda Leao, and their colleagues on the medical board, 
did everything that was possible to promote the work of the 
laboratory. The active and loyal co-operation of the medical 
profession in Manaos also contributed largely to the success of the 
expedition. Without this aid, freely rendered on all sides, little 
work could have been accomplished, and the intimate relationship 
which existed between all parties h'as been attended with pleasant 
memories. It is impossible to specify individually the names of our 
co-workers, since it would involve the enumeration of the whole of 
the medical profession in Manaos; but to one and all I wish to 
tender my warmest thanks. 
In this expression of gratitude mention must be made of the 
authorities of the Santa Casa de Misericordia, and Portugueza 
Beneficente, and the Sisters of the Religious Orders who are 
responsible for the nursing of the patients. Here again help was 
freely and continuously given. 
The business firms and their staffs in Manaos, and the subscribers 
to the expedition have been of assistance in every possible way. 
Invidious though it be to single out an individual firm, I must, 
however, express my warm appreciation of the interest which the 
Booth Steamship Company exhibited in the work. The sub¬ 
committee in charge of the organisation of the expedition was 
composed of two of the Directors of the Company, and no request, 
however extravagant and exacting it might seem, was refused. W ithout 
their co-operation experimental work with such costly animals would 
have been impossible, nor could the chimpanzees have been imported 
under mosquito-proof conditions. 
In compiling this report, which is the outcome of nearly three and 
a half years of actual observation, I have endeavoured to be as open 
and fair-minded as possible. The suggestions have been brought 
forward solely with the view to assist the authorities in Manaos in 
