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AUTOGENOUS AUTOGENY (Gr. abroyevi7s)
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AUTOGENY, AUTOGENOUS (Gr. abroyevi7s), spontaneous generation, self-produced. Haeckel distinguished autogeny and plasmogeny, applying the former term when the formative fluid in which the first living matter was supposed to arise was in-organic and the latter when it was organic, i.e. contained the requisite fundamental substances dissolved in the form of complicated and fluid combinations of carbon. In " autogenous soldering " two pieces of metal are united by the melting of the opposing surfaces, without the use of a separate fusible alloy or solder as a cementing material.