Vritra, though from the same root as Varuna (the sky), means at first a coverer of the sky--cloud or darkness; hence eventually he becomes the hider, the thief, who steals and conceals the bounties of heaven--a rainless cloud, a suffocating night; and eventually Vritra coalesces with the most fearful phantasm of the Aryan mind--the serpent Ahi. The Greek word for Adder, echis, is a modification of Ahi. Perhaps there exists no more wonderful example of the unconscious idealism of human nature than the history of the name of the great Throttler, as it has been traced by Professor Max Müller. The Serpent was also called ahi in Sanskrit, in Greece echis or echidna, in Latin anguis. The root is ah in Sanskrit, or amh, which means to press together, to choke, to throttle. It is a curious root this amh, and it still lives in several modern words, In Latin it appears as ango, anxi, anctum, to strangle; in angina, quinsy; in angor, suffocation. But angor meant not only quinsy or compression of the neck: it assumed a moral import, and signifies anguish or anxiety. The two adjectives angustus, narrow, and anxius, uneasy, both came from the same root. In Greek the root retained its natural and material meaning; in eggys, near, and echis, serpent, throttler. But in Sanskrit it was chosen with great truth as the proper name of sin. Evil no doubt presented itself under various aspects to the human mind, and its names are many; but none so expressive as those derived from our root amh, to throttle. Amhas in Sanskrit means sin, but it does so only because it meant originally throttling--the consciousness of sin being like the grasp of the assassin on the throat of the victim. All who have seen and contemplated the statue of Laokoon and his sons, with the serpent coiled around them from head to foot, may realise what those ancients felt and saw when they called sin amhas, or the throttler. This amhas is the same as the Greek agos, sin. In Gothic the same root has produced agis, in the sense of fear, and from the same source we have awe, in awful, i.e., fearful, and ug in ugly. The English anguish is from the French angoise, a corruption of the Latin angustitæ, a strait. [233] In this wonderful history of a word, whose biography, as Max Müller in his Hibbert Lectures said of Deva, might fill a volume, may also be included our ogre, and also the German unke, which means a 'frog' or 'toad,' but originally a 'snake'--especially the little house-snake which plays a large part in Teutonic folklore, and was supposed to bring good luck. [234] This euphemistic variant is, however, the only exception I can find to the baleful branches into which the root ah has grown through the world; one of its fearful fruits being the accompanying figure, copied from one of the ornamental bosses of Wells Cathedral.