in Thoreau’s Journal:  

Most huckleberries–& blue berries & low blackberries are in their prime now. A pleasant time to behold a small lake in the woods is in the interval of a gentle rainstorm at this season––when the air & water are perfectly still but the sky still overcast.  1st because the lake is very smooth at such a time––2nd as the atmosphere is so shallow & contracted––being low roofed with clouds––the lake as a lower heaven is much larger in proportion to it––  With its glassy reflecting surface it is somewhat more heavenly & full of light––than the regions of the air above it.