D’arcy Wentworth Thompson 
On Aristotle as a Biologist [PDF ebook] 
With a Prooemion on Herbert Spencer, Being the Herbert Spencer Lecture Delivered Before the University of Oxford, on February 14, 1913

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Let us recall, with all brevity, some few circumstances of Spencer’s life, that our minds may keep his memory green.