A white frost last night, fog this a.m., and sun coming through, giving promise of a glorious day.

4.30 p.m. Fog never lifted. It was a splendid day for wandering about in front examining wire, etc. Not a man had any sign of drink after B_____ [Bailleul]. I was only out for three hours this a.m., and was never in a trench at all so thick was the fog.