Thus, if the kings of Alba and Rome imitated Jupiter as god of the oak by wearing a crown of oak leaves, they seem also to have copied him in his character of a weather-god by pretending to make thunder and lightning. And if they did so, it is probable that, like Jupiter in heaven and many kings on earth, they also acted as public rain-makers, wringing showers from the dark sky by their enchantments whenever the parched earth cried out for the refreshing moisture. At Rome the sluices of heaven were opened by means of a sacred stone, and the ceremony appears to have formed part of the ritual of Jupiter Elicius, the god who elicits from the clouds the flashing lightning and the dripping rain. And who so well fitted to perform the ceremony as the king, the living representative of the sky-god? If the kings of Rome aped Capitoline Jove, their predecessors the kings of Alba probably laid themselves out to mimic the great Latian Jupiter, who had his seat above the city on the summit of the Alban Mountain. Latinus, the legendary ancestor of the dynasty, was said to have been changed into Latian Jupiter after vanishing from the world in the mysterious fashion characteristic of the old Latin kings. The sanctuary of the god on the top of the mountain was the religious centre of the Latin League, as Alba was its political capital till Rome wrested the supremacy from its ancient rival. Apparently no temple, in our sense of the word, was ever erected to Jupiter on this his holy mountain; as god of the sky and thunder he appropriately received the homage of his worshippers in the open air. The massive wall, of which some remains still enclose the old garden of the Passionist monastery, seems to have been part of the sacred precinct which Tarquin the Proud, the last king of Rome, marked out for the solemn annual assembly of the Latin League. The god's oldest sanctuary on this airy mountain-top was a grove; and bearing in mind not merely the special consecration of the oak to Jupiter, but also the traditional oak crown of the Alban kings and the analogy of the Capitoline Jupiter at Rome, we may suppose that the trees in the grove were oaks. We know that in antiquity Mount Algidus, an outlying group of the Alban hills, was covered with dark forests of oak; and among the tribes who belonged to the Latin League in the earliest days, and were entitled to share the flesh of the white bull sacrificed on the Alban Mount, there was one whose members styled themselves the Men of the Oak, doubtless on account of the woods among which they dwelt.