"Yeast." (The "Contemporary Review" December 1871.) "Critiques and
Addresses"; "Collected Essays" 8.

"Bishop Berkeley on the Metaphysics of Sensation." ("Macmillan's
Magazine" June 1871.) "Critiques and Addresses"; "Collected Essays" 6.

"The Problems of the Deep Sea" (1873). "Collected Essays" 8.

"Universities: Actual and Ideal." (The Inaugural Address of the Lord
Rector of the University of Aberdeen, February 27, 1874. "Contemporary
Review" 1874.) "Science and Culture"; "Collected Essays" 3.

"Joseph Priestley." (An Address delivered on the Occasion of the
Presentation of a Statue of Priestley to the Town of Birmingham on
August 1, 1874.) "Science and Culture"; "Collected Essays" 3.

"On the Hypothesis that Animals are Automata, and its History." (An
Address delivered at the Meeting of the British Association for the
Advancement of Science, at Belfast, 1874.) "Science and Culture";
"Collected Essays" 1.

"On some of the Results of the Expedition of H.M.S. 'Challenger'" 1875.
"Collected Essays" 8.

"On the Border Territory between the Animal and Vegetable Kingdoms."
(An Evening Lecture at the Royal Institution, Friday, January 28, 1876.
"Macmillan's Magazine" 1876.) "Science and Culture"; "Collected Essays"
8.

"Three Lectures on Evolution." (New York, September 18, 20, 22, 1876.)
"American Addresses"; "Collected Essays" 4.

"Address on University Education." (Delivered at the opening of the
Johns Hopkins University, Baltimore, September 12, 1876.) "American
Addresses"; "Collected Essays" 3.