The "rainy season" is by no means a gloomy, soggy period of constant cloudiness and rain.

Drinking too much wine gave her a headache, but dope left her head filled with a dull cloudiness that drove her nuts.

I visualise with effort; I am peculiarly inapt to see "after-images," "phosphenes," "light-dust," and other phenomena due to weak sight or sensitiveness; and, again, before I thought of carefully trying, I should have emphatically declared that my field of view in the dark was essentially of a uniform black, subject to an occasional light-purple cloudiness and other small variations.

A slight cloudiness indicates a trace of chlorides, and a decided milkiness shows the presence of a larger quantity.