ABSTRACT
The scientific search for general truths is satisfied in some measure by the discovery of natural classes through the Method of Classification, and by ascertaining evolutionary sequences with the aid of the Comparative Method. One usually endeavours to strengthen the result of the less strict application of one inductive method by the application of some of the other inductive methods as well, sometimes even by resorting to deductive reasoning from the nature of the case. Uniformities as the foregoing are for the most part only empirical, and not altogether satisfactory. Science looks as far as possible for what can be more or less adequately proved. The kinds of observations by which the man of science is led to surmise a real connection between certain facts, and the kinds of observation by which he then proceeds to test his surmise, or hypothesis, are often very similar.
