I1W 



PUBLIC 

 HEALTH 

 LIBRARY 



PREFACE TO THE ENGLISH EDITION. 



BRAUN'S work on Human Parasites is so well known and has 

 been so much appreciated that it has already reached a third 

 German edition. Thanks to the present publishers an English 

 translation appears which is sure to be welcomed by the Anglo- 

 Saxon race. 



The great importance of parasitology is becoming more marked 

 every day. It is especially in warm climates that this subject is 

 of such interest medically ; but, nevertheless, the practitioner in 

 temperate and cold regions is constantly brought face to face with 

 some parasitic infestation. 



The rapid strides made in parasitology make it necessary that 

 such works as this should be constantly revised. In this edition 

 a considerable amount of fresh matter has been incorporated, 

 bringing it up to date. The original text has been followed as 

 closely as possible ; additional matter is enclosed in brackets. 



The revision of the Protozoa, Cestodes and Nematodes has been 

 undertaken by Dr. Sambon ; the Trematodes, Arthropoda, &c., by 

 myself. A large amount of fresh matter has been added to the 

 Arthropoda especially dealing with Mosquitoes, Tsetse Flies, Ticks, 

 and other disease-carriers. 



The translation has been made with much patience and skill 

 by Miss Falcke, to whom the editors are much indebted for the 

 trouble and time she spent over the work. 



FRED. V. THEOBALD. 



Wye Court, Wye, 

 November, 1905. 



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