The chief causes of rectifier backfiring in the Glasgow units were overheating or unfavourable anode/cathode temperature differential; it has proved possible to overcome these, although occasional backfires do still occur.

Like a full-acorn'd boar, a German one, Cried O! and mounted; found no opposition

That morning, when the master left it, there was, in spite of all the wealth of learning gathered round its walls—in spite of the heavenly sun which fell so golden on the floor—in spite of the living landscape seen beyond, set in an azure setting, and painted by a higher Master than mortal man—there was an air of visible desolation, the desolatest dearth earth has—that of the absence of woman’s thought and care!

If I is a right ideal of R then Ir⊆I for any r isin R.