MAN'S PLACE IN NATURE. 

 Advertisement to the Reader. 



The greater part of the substance of the fol- 

 lowing Essays has already been published in the 

 form of Oral Discourses, addressed to widely dif- 

 ferent audiences during the past three years. 



Upon the subject of the second Essay, I de- 

 livered six Lectures to the Working Men in 1860, 

 and two, to the members of the Philosophical In- 

 stitution of Edinburgh in 1862. The readiness 

 with which my audience followed my arguments, 

 on these occasions, encourages me to hope that I 

 have not committed the error, into which working 

 men of science so readily fall, of obscuring my 

 meaning by unnecessary technicalities: while, the 

 length of the period during which the subject, 

 under its various aspects, has been present to my 

 mind, may suffice to satisfy the Reader that, my 

 conclusions, be they right or be they wrong, have 

 not been formed hastily or enunciated crudely. 



T. H. H. 



London : January, 1863. 



xv 



