CONCLUSION. 241 



formation of parasites, by generally improving and strengthening 

 the constitution. 



I should feel rejoiced if the officers of hospitals and private 

 institutions devoted to skin diseases would test the results which 

 I have mentioned here, since my own practice does not offer me 

 sufficient material and cases enough bearing upon diseases of the 

 skin. 



I have abandoned the plan of writing a complete literary index. 

 A rich literature is found in Diesing's work. In order to satisfy, 

 however, the practitioner, I intend to give, if possible, in a short 

 time, a literary index merely relating to the human parasites, and 

 which will be sold for a few pence. Here it is only my duty 

 to remind the reader that I have always mentioned the authors 

 when speaking of their labours^ in order to avoid the appearance of 

 passing off for my own observations those which in reality are the 

 property of others. None have been passed over intentionally: if 

 it should, however, have happened accidentally, I beg to express 

 here my sincere regret. 



Vogt's ' Zoological Letters/ Weber's * Illustrated Natural His- 

 tory/ and Martini's ' Hand-book of the Animals of Importance 

 in Medicine ' have chiefly been followed in the last part of the first 

 division of this work. I beg also to thank Dr. Wagner, of Leipsic, 

 and Drs. and Professors Virchow, Luschka, and Leuckart for the 

 many valuable suggestions I have received from them. 



And, now, may this book meet the judgment of the critic may 

 it be severe but just ; perhaps the author may claim some con- 

 sideration from having been obliged, far from any metropolis of 

 science, to spend much time and to undergo much trouble in pro- 

 curing the sources of his information, and has not in many cases 

 been able to succeed. The book has no doubt many defects, and 

 if one thing more than another could cause his regret on parting 

 with it, it is the conviction that it will easily be seen on closer exa- 

 mination that the book is the work of an autodidactician. May 

 the learning youth of my country fare better with regard to 

 the science treated of in these pages than I did during my earliest 

 studies. 



16 



