Grauvogl is our chief authority for the use of Aranea. It is one of the leading remedies for the hydrogenoid constitution as described by him, and for intermittent fevers and other intermittent affections. By hydrogenoid constitution he meant abnormal sensitiveness to damp and cold; and inability to live near fresh water, either rivers or lakes, or in damp, chilly places. This gives the < from bathing; from damp weather; damp localities, or habitations; < drawing in cold air. Chilliness followed by little or no fever. Chill and neuralgic attacks at the same hour every day, every other day, week, month, or regular period. Attacks are violent and sudden. Sensation of swelling in many parts, head, face, hands; of numbness; of coldness as if bones were made of ice. Haemorrhages from many parts; from wounds. Punctured wounds. Exhaustion. Pains like electric currents. Great desire to lie down; many symptoms > lying down. Toothache < night after lying down. On lying down in bed and touching bed-clothes, whether linen or wool, has a chill. Many symptoms occur on the right side. Chill not > by external warmth; no sweat with fevers.