midnight
A tongue at either end obviated the necessity of turning around . While the other men hewed at the required beam for the broken V plow , Heath , Stratton , and Green went over the cleared road-length once . To do so required three sprinklerfuls . When the road should be quite free , and both sprinklers running , they would have to keep at it until after midnight . And then silently the wilderness stretched forth her hand and pushed these struggling atoms back to their place . That night it turned warmer . The change was heralded by a shift of wind .