Show CIVIL ENGINEERS WORK AT NIGHT Pa Sept 12 Civil Civil engineers have added their company to toan toan an already 11 largo large number of night workers here hero and believe that their idea of surveying at night may be bo a a. really new thing The engineering corps of oC the tho Pittsburg flood commission commission commis commis- sion which is finding out just what work is necessary to keep the tho rivers from inundating the lower city every spring have lately had success in making mak in lug ing their observations in tho the dead of night The main advantage c lies in tho the fact that there is is no street traffic to hinder but it is also claimed that by bythe bythe bytho the tho use of an electric flash the meas ineas- poles are ale more easily ly distinguished distinguished distin distin- 1 through the transit at night than thau by day clay |