THE MOONS OF THE NAILS
Large "Moons" always denote strong action of the heart and rapid circulation of the blood, but when unusually large they indicate too much pressure on the heart, rapidity in its beat, the valves over-strained and danger of bursting some blood vessel in the heart or in the brain.
Small "Moons" indicate the reverse of this; they always denote poor circulation, weak action of the heart and anæmia of the brain.
When close to death the "Moons" are the first to take on a bluish look, and later on the entire Nail becomes blue or almost black in colour.