The second are the _cosmological_ or _cosmo-theological_ proofs. They essay to prove the existence of a supreme self-existent cause from the mere fact of the existence of the world, by the application of the principle of causality. Starting with the postulate of any single existence whatsoever, the world or anything in the world, and proceeding to argue backwards or upwards, the existence of one supreme cause is held to be 'a regressive inference' from the existence of these effects. As there cannot be, it is alleged, an infinite series of derived or dependent effects, we at length reach the infinite or uncaused cause. This has been termed the proof from contingency, as it rises from the contingent to the necessary, from the relative to the absolute. But the cosmological proof may have a threefold character, according as it is argued: 1. That the necessary is the antithesis of the contingent; or, 2. That because some being now exists, some being must have always existed; or, 3. That because we now exist and have not caused ourselves, some cause adequate to produce us, must also now exist. A third class of proofs are somewhat inaccurately termed _physico-theological_, a phrase equally descriptive of them and of those last mentioned. They are rather _teleological_ or _teleotheological_. The former proof started from any finite existence. It did not scrutinise its character, but rose from it to an absolute cause, by a direct mental leap or inference. This scrutinises the effect, and finds traces of intelligence within it. It detects the presence or the vestiges of mind in the particular effect it examines, viz., the phenomena of the world, and from them it infers the existence of Deity. One branch of it is the popular argument from design, or adaptation in nature, the fitness of means to ends implying, it is said, an architect or designer. It may be called _techno-theology_, and is variously treated according as the technologist (α) starts from human contrivance and reasons to nature, or (β) starts from nature's products and reasons toward man. Another branch is the argument from the order of the universe, from the types or laws of nature, indicating, it is said, an orderer or law-giver, whose intelligence we thus discern. It is not, in this case, that the adjustment of means to ends proves the presence of a mind that has adjusted these. But the law itself, in its regularity and continuity, implies a mind behind it, an intelligence animating the otherwise soulless universe. It might be termed _nomo-theology_ or _typo-theology_. Under the same general category may be placed the argument from animal instinct, which is distinct at once from the evidence of design and that of law or typical order. To take one instance: The bee forms its cells, following unconsciously, and by what we term 'instinct,' the most intricate, mathematical, laws. There is mind, there is thought in the process; but whose mind, whose