Usage examples (19)

• Stagnant pools were found full of them, and the obvious difficulty of assigning a germinal origin to existences so minute furnished the precise condition necessary to give new...
• Nor can either abiogenesis or heterogenesis be excluded
• Instead, he con - tinued to accept a limited type of heterogenesis pertaining to the presumed production of gall-insects from living plant tissues and of parasitic worms...
• On this aspect of the question, Pasteur's disproof of heterogenesis was not altogether decisive and was, in part, to be counterbalanced on a more theoretical plane by...