IV 



I feel that some portions of the Translation are open to the 

 charge of inelegance, and this has arisen from my anxiety rather 

 to give a correct notion of the Author's meaning than, by the use 

 of other language, to diminish the force of the original. 



The delay in the publication has been owing in part to ill-health, 

 and in part to the pressure of other engagements. I have only 

 now been enabled to produce it thus early in the year through the 

 kind assistance of my friend, Mr. Arthur Henfrey, who has not 

 only revised the whole of the Morphology, but translated several 

 sheets. I am also indebted to Mr. Henfrey for the translation of 

 the new matter in the third German edition of the Work, which 

 will be found in the Appendix. I have likewise to offer my thanks 

 to my friends, Dr. Day and Mr. Busk, for much valuable assistance ; 

 and to another friend, for kindly revising the proof-sheets of the 

 whole Work. - 



22. Old Burlington Street, London, 

 April, 1849. 



