history and genesis. George Boole was abundantly rewarded in his lifetime with medals and honorary degrees; but his books are now out of print.
Ram Chundra. Treatise on Maxima and Minima, with introduction by J. Herschell and A. De Morgan about ancient Asiatic Methods.
Gratry: A French Oratorian. His work on Logic contains a valuable analysis of the psychology of the Infinitesimal Calculus; which he, as did afterwards Hinton, treated as proof of the importance to intellectual progress of rhythmic alternation between the study of detail and the synthesizing of details. He asserts that Geometric Induction is a process of prayer; by which he means an appeal from the finite to the Infinite for light upon finite concerns. The mathematical portion of his work is out of print.
Benjamin Betts, formerly of the Government Survey of New Zealand, after much study of Fichte's philosophy, invented a peculiar system of co-ordinates, by means of which he illustrated diagrammatically the expansion of thought under pressure from opposing forces. To his
surprise his diagrams turned out to resemble the outlines of many known leaf and flower forms,
