Gall says, regarding its discovery: "I often conversed with a philosopher endowed with great vivacity, who, when unable to prove his point by logic, had recourse to a comparison, by which he often threw his opponents off the track, which he could not do by arguments." It tends to reason by analogy, and to make rapid and clever generalizations. The majority of scientists have it largely developed, as also do discoverers in all lines of investigation and research, and as Gall says: "Its possessors seize and judge well of the relations of things, etc., and are well fitted for business." It is attracted by investigation and thought regarding concrete things, rather than by abstract subjects. It is scientific, rather than philosophical. As Prof. O. S. Fowler says, it: "illustrates with great cleverness and facility from the known to the unknown, and discovers the deeper analogies which pervade nature, and has an extraordinary power of discovering new truths. It reasons clearly and correctly from conclusions and scientific facts up to the laws which govern them; discerns the known from the unknown; detects error by its incongruity with facts; has an excellent talent for comparing, explaining, expounding, criticising, exposing, etc.; employs similes and metaphors well; puts this and that together, and draws correct inferences from them." This Quality manifests in outer form in the middle of the upper part of the forehead, along the middle-line, just below the hair, directly above Eventuality, and between the two lobes of Logic (see group figure). Prof. O. S. Fowler says of it: "It commences at the centre of the forehead and runs upward nearly to the hair. When it projects beyond surrounding organs it resembles a cone, its apex forming a ridge which widens as it rises. Its ample development elevates the middle of the upper portion of the forehead, and gives it an ascending form." LOGIC. This Quality manifests in a strong desire to inquire into the "Why?" of things--into Causes--into the "Wherefore?"; and to reason therefrom to _effects_ and application of laws. Those in whom it is large manifest the power of _logical reasoning_ to a high degree, and abhor fallacies. This is the _philosophical_ faculty of mind. It searches back of facts and phenomena for _causes_, _motives_ _and laws_, and then reasons deductively from these. Combe says: "This faculty prompts us on all occasions to ask, "Why is this so, and what is its object?" It _demands reasons and proofs_ in the reasoning of its owner, as well as from others."