Vili. INTRODUCTION TO FRENCH EDITION 
I have experienced at the hands of a large number of 
our. ministers, consuls, or consular agents abroad the most 
cordial reception on repeatedly addressing myself to them 
in order to obtain the papers or information of which I was 
in need. It is only right for me to thank them for it, 
and to acknowledge the trouble that M. Masson has most 
kindly taken in publishing this book. 
Institut Pasteur de Lille, A. CALMETTE. 
March 10, 1907. 
