What does the word hereby mean?

Usage examples for hereby

  1. Remember that the League of the Scarlet Pimpernel have never failed to succour, and that I hereby pledge you mine honour that you and those you care for will be out of Lyons this night." – The League of the Scarlet Pimpernel by Baroness Orczy
  2. Influenced by these ideas, the government issued the following proclamation: " Since the commander of the 'Terror' has refused to make public his invention, at any price whatever, since the use which he makes of his machine constitutes a public menace, against which it is impossible to guard, the said commander of the 'Terror' is hereby placed beyond the protection of the law. – The Master of the World by Jules Verne
  3. For he hereby admits that in animals " impressions received result in sensations which give rise to the observation of sensible objects," and that they have what he calls " sensible perception." – Critiques and Addresses by Thomas Henry Huxley