heterogenists

Germany the ablest literature of the subject, even that opposed to heterogeny, is infected with this error; while heterogenists at home and abroad have based upon it a triumphant demonstration of, their doctrine.

Fragments of science, V. 1-2 John Tyndall 1856

Remembering then the number and variety of the infusions employed, and the strictness of our adherence to the rules of preparation laid down by the heterogenists themselves; remembering that we have operated upon the very substances recommended by them as capable of furnishing, even in untrained hands, easy and decisive proofs of spontaneous generation, and that we have added to their substances many others of our own -- if this pretended generative power were a reality, surely it must have manifested itself somewhere.

Fragments of science, V. 1-2 John Tyndall 1856