CHAPTER VI. _Desert Sky and Clouds._--Commonplace things of

Nature--The blue sky--Changes in the blue--Dawns on the desert--Blue as a color--Sky from mountain heights--Blackness of space--Bright sky-colors--Horizon skies--Spectrum colors--Bands of yellow--The orange sky--Desert-clouds--Rainfall--Effect of the nimbus--Cumuli--Heap-clouds at sunset--Strati--Cirri--Ice-clouds--Fire-clouds--The celestial tapestry--The desert moon--Rings and rainbows--Moonlight--Stars--The midnight sky--Alone in the desert--The mysteries--Space and immensity--The silences--The cry of the human 95