So far as evolution is concerned, it really matters little' at what point intelligence appears. Intelligence proper includes the reasoning power as its chief and distinguishing characteristic. Facts regarded as proving a degree of this power in animals were reviewed in detail, and shown to be susceptible of a lower interpretation in harmony with the general phenomena of animal life.
Proceedings of the Iowa Academy of Sciences
©1887 Iowa Academy of Science, Inc.
Parker, H. W.
Proceedings of the Iowa Academy of Science, 1(Pt. 1), 8-10.
Available at: https://scholarworks.uni.edu/pias/vol1/iss1/7