I. THEORY OF GEOMETRICAL REASONING. (Feb. i, 1869.) 



II. HEGEL AND THE METAPHYSICS OF THE FLUXIONAL 

 CALCULUS. (May 17, 1869.) 



III. ON THE FLOW OF ELECTRICITY IN CONDUCTING SUR 



FACES. (Feb. 21, 1870.) 



IV. NOTE ON PROFESSOR BAIN S THEORY OF EUCLID, I. 4. 



(June 6, 1870.) 



V. DR. STIRLING, HEGEL, AND THE MATHEMATICIANS. 



(April, 1873.) 



