title: SALT BRIDGES AND NEGATIVE VARIATIONS.
abstract: A negative variation in Nitella is unable to pass a spot killed by chloroform but can set up a negative variation beyond this spot when a salt bridge is put around it. It can likewise set up a negative variation in a cell of another plant if connected to it by two salt bridges.
authors.affiliation: Laboratories of The Rockefeller Institute for Medical Research.
authors.forename: W J
authors.initials: WJ
authors.lastname: Osterhout
authors.forename: S E
authors.initials: SE
authors.lastname: Hill