Ammonium nitrate and nitrite, for instance, intensify the action of a water on lead.
This, added to ill-health, served to intensify a natural irritability of temperament, and the history of his later Weimar days is a rather dreary page in the chronicles of literary life.
The indirect geographical elements, which, as a rule, act with and intensify the direct, are mainly climatic; the prevailing winds, rainfall, mean and extreme temperatures of every locality depending on the arrangement of land and sea and of land forms. Climate thus guided affects the weathering of rocks, and so determines the kind and arrangement of soil.
From this point of view, the desire to intensify the denudation of Palestine and the fate of its remnant, and to look to the Babylonian exiles for the future, can probably be recognized in the writings attributed to contemporary prophets.'