TRANSLATOR'S PREFACE. 



MY principal reason for undertaking the translation 

 of Dr. Fritz Miiller's admirable work on the Crustacea, 

 entitled 'Fiir Darwin,' was that it was still, although 

 published as long ago as 1864, and highly esteemed 

 by the author's scientific countrymen, absolutely 

 unknown to a great number of English naturalists, 

 including some who have occupied themselves more 

 or less specially with the subjects of which it treats. 

 It possesses a value quite independent of its reference 

 to Darwinism, due to the number of highly interesting 

 and important facts in the natural history and par- 

 ticularly the developmental history of the Crustacea, 

 which its distinguished author, himself an unwearied 

 and original investigator of these matters, has brought 

 together in it. To a considerable section of English 

 naturalists the tone adopted by the author in speaking 

 of one of the greatest of their number will be a source 

 of much gratification. 



In granting his permission for the translation of his 

 little book, Dr. Fritz Miiller kindly offered to send 

 some emendations and additions to certain parts of it. 

 His notes included many corrections of printers' errors, 

 some of which would have proved unintelligible with- 

 out his aid, some small additions and notes which 



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