The most delicate task in craniological study, and the most important, is the balancing of opposite tendencies belonging to antagonistic organs; and it was for the want of the knowledge of antagonisms that the Gallian system so often failed in describing character and its representatives before the public have made the most disastrous blunders. Shrewd and honest observers discovered the imperfections of the science.[2] [2] A letter just received from Australia states that the writer had for many years been a student of phrenology, and had ascertained from examining hundreds of crania that phrenology "stood on a basis of fact, but was wrong as well as deficient in some of its details. But though I could point to several parts of the skull where the readings of professionals as well as myself were always unreliable, I could not discover the real function of the organs in these places." While the eye readily gives us the contour of heads that have not much hair, there is but little accurate judgment without the use of the hand, which is the first thing to be learned. Not the tips of the fingers, but the whole hand should be laid upon the head gently, to cover as much surface as possible, while with a gentle pressure we cause the scalp to move slightly, and thus feel through it the exact form of the cranium as correctly as if the bones were exposed to view. If in this examination we find any sharp prominences, which might be called bumps, we attribute them to the growth of bone, which does not indicate the growth of the brain. The latter is indicated only by the general contour.