Before revision: The burden became even larger when the United States Coast and Geodetic Survey ( USCGS, the successor to the Coast Survey ) started using the more accurate harmonic method for predictions of tides in 1884.
After revision: The burden became even larger when the United States Coast and Geodetic Survey ( USCGS, as the U.S. Coast Survey was renamed in 1878 ) started using the more accurate harmonic method for predictions of tides in 1884.