In good condition. Covers and spine have age-related wear and slight discoloration. Top and bottom of spine have some slight age-related tears. Title page has a tear at the bottom of the inside corner. Pages have age-related toning and foxing. Hinges are slightly loose, specifically at the covers, but pages are generally well-supported. Edges of pages have age-related wear and toning. Illustrations and images are in good condition and clear to see, despite some slight age-related toning or foxing. Plate cover by the title page is slightly torn at the top. Please see photographs and ask any questions prior to purchasing.

C. Lloyd Morgan was a British ethologist and psychologist. He was known for his theory of emergent evolution, which is the theory that new properties, such as consciousness, emerge during the process of evolution. He also hypothesized that the higher mental capabilities of animals should be considered when the lower capabilities could not be used to understand the behavior of an animal. This would later become known as Morgan's Canon. 

FORN-ABE-MSB-Shelf-570-jr369