PREFACE TO SECOND EDITION 



Our aim in writing this book was primarily to 

 assist the beginner who. had little or no experience 

 of the study of malaria or kindred diseases of man 

 and animals. While keeping this view steadily 

 in mind, we by no means intended that its 

 scope should be restricted solely to this, but 

 endeavoured to make the book a convenient and 

 complete reference book for those investigating 

 blood parasites. Progress in the study of blood 

 parasites is extremely rapid, and we have to add 

 to this new edition, besides many new Anophelines 

 and mosquito genera and details of mosquito life, 

 many new haemogregarines, trypanosomata, etc., 

 and an account of Schaudinn's remarkable 

 investigations on ' Halteridium.' Two new 

 additional chapters have also been added, one on 

 the Leishman-Donovan bodies ; a second on 

 spirillar fever. The chapter on biting flies and 

 fleas has been much expanded, and in response to 

 requests we have added four new coloured plates. 



November, 1904 



