PREFACE 



I find it very difficult to thank individually the very large group 

 of friends who shew^ed me so much kindness and gave me so much 

 assistance whilst I stayed in New Orleans. I am deeply indebted 

 to Dr. White, who was in charge of the campaign, to Dr. Warner, 

 Chairman of the Ward Organisations, to Dr. Le Boeuf, the Chairman, 

 and to his Colleagues on the Medical Advisory Committee, and to 

 Mr. Behrman, Mayor of New Orleans. I was brought in contact 

 almost daily with and received great help from the members of 

 Dr. White's staff, and I tender to them my sincere thanks. 



I am especially indebted to Dr. Richardson for much advice and 

 assistance. I wish especially to thank my friend Dr. Paul Archinard, 

 who allowed me the use of his laboratory, as also Drs. Matas, Pothier, 

 Jones, Guthrie, Beyer, Perkins and Marks. I beg also to thank, 

 for much valuable assistance, Mr. Janvier, President of the Yellow 

 Fever Fund, Dr. Kohnke, President of the New Orleans Board of 

 Health, Dr. Souchon, President of the State Board of Health, and 

 the Secretary, Dr. Paton. For much personal kindness during my 

 stay in New Orleans, I beg to thank Mr. Le Blanc, Mr. Liversedge, 

 of the Elder, Dempster Company, the Manager of the United Fruit 

 Company, Mr. Donnelly, the Acting British Consul, and many others 

 who all contributed to make my stay in New Orleans of profit. For 

 figures 2 and 6-i i I am indebted to Dr. White. 



