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OL. 21 

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THURSDAY, JANUARY 22, 1880. j 



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LECTURES AND ESSAYS. 



IIY THE LATE 



WILLIAM KINGDON CLIFFORD, F.R.S . 



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'tow of Trinity College, Cud: 



:dited by LESLIE STEPHEN and FREDERICK POLLOCK, with an Introduction by F. 

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SEEING AND THINKING.' 



BY THE LATE 



WILLIAM KINGDON CLIFFORD, F.R.S. 



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JONTENTS.— The Eye and flu- Brain— The Eye and Seeing— The Brain and Thinking— Ol 

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