VI PREFACE. 



Nor can I conclude without a word of thanks to the young 

 artist, Mr. W. H. Wesley, to whose skill, painstaking, and 

 thorough faithfulness, the excellence of most of those illustra- 

 tions is due. It will be understood that, when the contrary is 

 not expressly stated, the drawings are original. 



The Lectures differ, by the omission of the inaugural Dis- 

 course, which would have been out of place in this volume of 

 the work I contemplate ; by additions to others ; and by a 

 change of arrangement, from those which were published in 



the " Medical Times and Gazette." 



T. H. H. 



London, March 7th, 1864. 



