varying forms, many of them not the one hundred-thousandth part of an inch in length, to say nothing of their other dimensions, may owe their oscillations, wave movements, darting and other manifestations, and even their molecular arrangements and rearrangements, to other causes than those strictly "vital." And it should be borne in mind that their actual movements are just as much exaggerated under the microscope as their real dimensions. But as they make their appearance in organic infusions only, they are presumably vital organisms rather than fomentative or mere filamentous yeast-manifestations. Professor Huxley, while conceding that molecular changes may take place under environing life-conditions, or in protoplasmic matter, denies that the "primordial cells" possesses in any degree the characteristics of a "machine," nor can they undergo any differentiating process by which the character of their manifestations can be changed. And he even denies to them the poor right to originate or in any way modify their own plasma. He says: "They are no more the producers of vital phenomena, than the shells scattered in orderly line along the sea-beach are the instruments by which the gravitative force of the moon acts upon the ocean. Like these, the cells mark only where the vital tides have been, and how they have acted." This is undoubtedly true of all cells in which the vital or functional office has ceased, as in the case of Professor Beale's "formed matter." The cells are the result of the vital principle that lies behind them, and simply indicate where life exists, or has manifestly ceased to exist. Where the vital currents have ceased to flow, the wreck of primordial cells is quite as wide and disastrous as where millions of sea-shells have been strewn along a desolated and storm-swept sea-beach. They all come, both the cells and shells, from the preëxisting vital units, or determinate germs, that fall into their own incidences of movement, without any concurrence of physical conditions beyond their own inherent tendency to development. For "conditions" do not determine life; they only favor its manifestation.