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Updated: October 26, 2026
It is only of recent years that the histologist's microscope and the physiological chemist's test-tube have furnished them with a rational basis. It is no longer possible to cut Nature in two and assert that here she is pure and there impure.
The result was a practically unanimous confirmation of the Spanish histologist's claims, and within a few months after his announcements the old theory of union of nerve cells into an endless mesh-work was completely discarded, and the theory of isolated nerve elements the theory of neurons, as it came to be called was fully established in its place.