The discovery of the facts is conducted, as in all other sciences, by study of what the field affords. Geology examines the earth, and derives its facts from the structure of that earth. Astronomy investigates the stars. Theology, likewise, studies the sources of its knowledge. Each science seeks to arrive at the truth. The votaries of each are certain that it is to be found in their fields, either partially, or completely. The perfect attainment of all facts prepares for the exactness of scientific