Sequard insists that the fluid does not act as a stimll-, than those of 1869 and 1871 is at once clear. The op lant which calls into action pre-existing forces, to be ' position of 1877 and the present are not shown on the followed by depression, but that it increases the trans-diagram, but they occurred at a time when Mars was formation of energy to which are due the various not far from its perihelion. powers of the Hpinal cord and brain.-Therapeutic The diagram also allows us to see that at

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... he peri * OEiservationi. 8strono miche e fisiche toul!' aSBe di rotaUonie e Elul1a topografia del pianela Marte. R. Accad. dei Lin cei, 1880-81.