Crossword-Solution: RESIDUA 7 letters, 5 clues 🏆 scrabble score: 8

John Fiske says in his lecture on "Life Everlasting," I once heard Herbert Spencer say, "you cannot take up any problem in physics without being quickly led to some metaphysical problem which you can neither solve nor evade." Again he says, "The more things we try to explain, the better we realize that we live in a world of unexplained residua." Widening knowledge is throwing back into the lumber room many much vaunted theories of origins.

The residua of distillation remain almost entirely in the reservoir, O, from whence they are easily removed.

The former, however, is now seldom to be met with, the varieties employed on the palette being the residua of various resinous and bituminous matters, distilled for the sake of their essential oils.

These residua are all black and glossy like common pitch, which differs from them only in having been less acted upon by fire, and thence in being softer.

Hence the logic of the child is hampered and mortified, and we are almost fortunate if he does not get actual non-science, flat and common-place residua of what was gaining scientific vitality a generation or two ago--degenerate reminiscence of what someone else once formulated on the basis of the experience that some further person had, once upon a time, experienced.