PREFACE XI 



sonal impression, and must be so regarded by 

 the reader. However objective in treatment 

 one might wish to be, his point of view is always 

 more or less warped by the personal equation, 

 and I can pretend to nothing more than a 

 view. As the sub-title indicates, these impres- 

 sions are general in character in fact " first 

 studies/' The book is designed as an intro- 

 duction to a subject which I hope to consider 

 more fully hereafter. 



SAGE LIBRAKY, J. 0. V. D. 



NBW BHUHSWICK, N. J. 



