Before revision: By 1974 had it become possible to transmit seismic signals electronically from remote seismometers, and the Seismo Lab was then relocated to the Caltech campus, becoming over time more integrated into, and less distinct from, the Caltech Division in which it is administratively situated.
After revision: By 1974 it had become possible to transmit seismic signals electronically from remote seismometers, and the Seismo Lab was then relocated to the Caltech campus, becoming over time more integrated into, and less distinct from, the Caltech Division in which it is administratively situated.