PREFACE TO THE AMERICAN EDITION 



THIS American edition of Parker and HaswelPs useful 

 and concise " Manual of Zoology " has been adapted for the 

 use of American schools. Common American forms closely 

 similar to the European or Australasian ones described in 

 the English edition, have been mentioned, so that the 

 student can use the book in examining the allied typical 

 forms from his own country. In the majority of cases the 

 European species differ only in trivial characteristics, so 

 that one general description will answer for both. 



In a very few cases the American editor has revised and 

 corrected views or statements not believed to be correct. 

 For example, few, if any, American zoologists would regard 

 Limulus as an undoubted Arachnidan. 



A few additional American animals have been referred to 

 and figured, while a few cuts not reproduced in the English 

 edition have been copied from Parker and HaswelPs 

 "Text-book of Zoology," and also from Sedgwick's "Text- 

 book of Zoology." 



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