The opening of Preface
The English edition of Braun’s “Die Tierischen Parasiten des Menschen,” produced in 1906, being out of print, the publishers decided to issue another edition based on the translation of Braun’s fourth German edition, which appeared in 1908, to which had been added an appendix, by Dr. Otto Seifert on Treatment, etc.
When the work was considered with a view to a new edition, it was found that a vast amount of new matter had to be incorporated, numerous alterations essential for bringing it up to date were necessitated, and many omissions were inevitable. The result is that parts of the book have been rewritten, and, apart from early historical references, the work of Braun has disappeared. This is more particularly the case with the Protozoa section of the present work. The numerous additions, due to the great output of scientific literature and other delays in publication, have led to the book being somewhat less homogeneous than we desired, and have necessitated the use of appendices to allow of the presentation of new facts only recently ascertained. Many new illustrations have been added or substituted for older, less detailed ones. Some of these new figures were drawn specially for this book.