The Civil Service Commission of the City of Los Angeles is charged with, among other things, the filling of some 35,000 positions in some 1,250 different classes. These classes range all the way from hydrographers up in the High Sierra Mountains, who measure the snowfall in an attempt to determine the amount of water that the city will have during the ensuing year, to a host of linemen, powerhouse operators, electrical mechanics, and so forth, who operate the installations at Boulder Dam on the Colorado River, to the port pilots who bring in ships from sea and dock them safely in the berths of our harbor, and the whole gamut of municipal employment in between.