About two o'clock
The feel of the warm air was most grateful . Such difficulties as offered served merely to add zest to the job . At noon I ate some pilot bread and a can of sardines bought from my employers . About two o'clock the wind came up from the sea , and the air filled with the hurrying clouds of dust . In my journeys back and forth I had been particularly struck by the bold , rocky hill that shut off the view toward the north . Atop this hill had been rigged a two-armed semaphore , which , one of the clerks told me , was used to signal the sight of ships coming in the Golden Gate . The arms were variously arranged according to the rig or kind of vessel .