CUTANEOUS: Red spot on the knee-pan. Boils on the arm. Crusty eruption on the ear and cheek. Itching pimple on the legs. Vesicular eruption on the feet. 270. Phlyctænæ here and there, especially on the extremities. Pimples full of serum. Red pimples at the tips of the fingers. Miliary pimples at the corner of the nose, upon a red base. Furfuraceous tetter at the hairy scalp. 275. Suppurating pimples on the hands, fingers, wrists, gums, &c. Numerous white pimples at the inside of the thighs, inflamed in the day-time. Little pimples, followed by desquamation. Yellow spots on the hand and fingers. Red tetter from the corner of the right nostril to the cheek. GENERAL: 280. Lassitude in the limbs. Congestion first to the chest, then the abdomen. Stitch in the side. Pressure in left side, extending to the vertebral column. Black blood spirts out of the finger when pricked. 285. The right side feels sensitive, with inability to rise in the morning. Prickling as by spice, after triturating the drugs. Spirting of arterial blood from the nose and ears. Pain in the right side, up to the axilla. Stitch in the side. 290. Lassitude in all the limbs. At the least contrariety the body shudders and the blood boils, with prickling. Cramps in the right side. Quick lancinations in the back, sides and arms. The extremities look blue, with reddish spots. 295. Paralysis of the right side. The right side is numb and as if paralysed. Constrictive pain at the bend of the elbow and knee. A change of position is painful. Aching in left side. 300. Disposed to faint. PEDICULUS CAPITIS (COMMON LOUSE). It is scarcely necessary to give a description of this species which is sufficiently known; we shall content ourselves with indicating the principal characteristics which distinguish it from the other vermin living on the surface of the human body. The louse is of an oval form; flattened, longer than the crab-louse; its head is very small; its thorax is composed of three not very distinct rings; the abdomen is all of one piece, rounded off on the sides; it is ash-colored, whereas the crab-louse is entirely white. The lice which have been made use of in our provings, were taken from the head of a healthy child of five years. Even before undertaking this experiment we expected to derive from it important results. We entertained the belief that nature pointed out to us the louse as a specific for the hereditary psora, in which belief we were strengthened by the fact that psorin develops the lice-malady in healthy persons. And we are now prepared to affirm that we have found the louse one of the most useful agents in diseases of children. We offer the following pathogenesis with a sincere pleasure which none but those who devote themselves to such patient investigations, can appreciate.[2] SYMPTOMATIC ARRANGEMENT ACCORDING TO HAHNEMANN.