If the figure of the healthy infant is observed, something may be learnt from this. There will be perceived such an universal roundness in all parts of the child's body, that there is no such thing as an angle to be found in the whole figure; whether the limbs are bent or straight, every line forms a portion of a circle. The limbs will feel firm and solid, and unless they are bent, the joints cannot be discovered. The tongue, even in health, is always white, but it will be free from sores,--the skin cool,--the eye bright,--the complexion clear,--the head cool,--and the abdomen not projecting too far,--the breathing regular, and without effort. When awake, the infant will be cheerful and sprightly, and, loving to be played with, will often break out into its merry, happy, laugh; whilst, on the other hand, when asleep, it will appear calm, every feature composed, its countenance displaying an expression of happiness, and frequently, perhaps, lit up with a smile. Sect. II. SIGNS OF DISEASE. Just in proportion as the above appearances are present and entire, health may be said to exist; and just in proportion to their partial or total absence disease will have usurped its place. We will, however, for the sake of clearness examine the signs of disease as they are manifested separately by the countenance,--the gestures,--in sleep,--in the stools,--and by the breathing and cough. OF THE COUNTENANCE. In health the countenance of a thild is expressive of serenity in mind and body; but if the child be unwell, this expression will be changed, and in a manner which, to a certain extent, will indicate what part of the system is at fault. The brows will be contracted, if there is pain, and its seat is in the head. This is frequently the very first outward sign of any thing being wrong, and will occur at the very onset of disease; if therefore remarked at an early period, and proper remedies used, its notice may prevent one of the most fearful of infantile complaints--"Water in the Head." If this sign is passed by unheeded, and the above disease be threatened, soon the eyes will become fixed and staring,--the head hot, and moved uneasily from side to side upon the pillow, or lie heavily upon the nurse's arm,--the child will start in its sleep, grinding its teeth, and awake alarmed and screaming,--its face will be flushed, particularly the cheeks (as if rouged),--its hands hot,--but feet cold, its bowels obstinately costive, or its motions scanty, dark-coloured, and foul. If the lips are drawn apart, so as to show the teeth or gums, the seat of the pain is in the belly. This sign, however, will only be present during the actual existence of suffering; if, therefore, there be any doubt whether it exist, press upon the stomach, and watch the eifect on the expression of the countenance.