Appearance
The quagga mussel shell is striped, as is that of the zebra mussel, but the quagga shell is more pale toward the end of the hinge. There is a large range of shell morphologies, including a distinct morph in Lake Erie that is pale or completely white. The quagga is slightly larger than the zebra mussel, about 20 millimetres (0.8 in) wide, roughly about the size of an adult human's thumbnail. The quagga has a rounded carina and a convex ventral side.
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“Look into the world—how often do you behold a sordid wretch, whose straight heart is open to no man’s affliction, taking shelter behind an appearance of piety, and putting on the garb of religion, which none but the merciful and compassionate have a title to wear.”
—Laurence Sterne (1713–1768)
“The aim of science is to apprehend this purely intelligible world as a thing in itself, an object which is what it is independently of all thinking, and thus antithetical to the sensible world.... The world of thought is the universal, the timeless and spaceless, the absolutely necessary, whereas the world of sense is the contingent, the changing and moving appearance which somehow indicates or symbolizes it.”
—R.G. (Robin George)
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Selah, tempestuous bird. How is it that
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—Wallace Stevens (1879–1955)