This books a transcription of John Tyndall's 1974 address before the meeting of the British Association for the Advancement of Science. These addresses provided opportunities to state the concerns and aims of science to the most important assembly of the elites of Victorian science, as well as providing the speakers a chance to propose or challenge the modus operandi of contemporary science. This fascinating treatise details Tyndall's famous address to the assembly wherein he argued for the superior authority of science over religious and non-rationalist explanations, bravely delivered in the religious stronghold of Belfast. A fascinating insight into the struggle of science versus religion, this address remains a powerful call for rationalism, consistence and scepticism - a must-have for any collector of antiquated scientific literature and enthusiasts of scientific history. Originally published in 1874, this valuable text is republished here with an introductory biography of the author.