Correspondingly forest conditions change from the densely forested hills and mountain slopes during the age of the nomad and hunter to the “enclaves” or patches of field and pasture enclosed by the forest of the first farmers, then follows the opening up of the valleys and lowlands, while the hill and mountain farms may return to forest, and finally, with the increase of population and civilization in valleys and plains, a reduction of the forest area and a decrease of forest wealth results. 1. _Forest Conditions._ While we have many isolated references to forest conditions and progress of forest exploitation among the ancients in the writings of poets and historians, these are generally too brief to permit us to gain a very clear picture of the progress of forest history; except in isolated cases, they furnish only glimpses, allowing us to fill in the rest to some extent by guess. That the countries occupied and known to the ancients, even Spain and Palestine, were originally well-wooded there seems little doubt, although in the drier regions and on the drier limestone soils, the forest was perhaps open, as is usual under such conditions, and truly arid, forestless regions were also found where they exist now. Although it has been customary to point out some of the Mediterranean and Eastern countries as having become deserts and depopulated through deforestation, and although this is undoubtedly true for some parts, as Mount Lebanon and Syria, generalization in this respect is dangerous. We know, however, that by the 11th century before Christ, in Palestine, Asia Minor and Greece, especially in the neighborhood of thriving cities, the forest cover had vanished to a large extent and building timber for the temples at Tyre and Sidon had to be brought long distances from Mount Lebanon, whose wealth of cedar was also freely drawn upon for ship timber and other structures. Although about 465 B.C. Artaxerxes I, having recognized the pending exhaustion of this mountain forest, had attempted to regulate the cutting of timber, the exploitation had by 333 B.C. progressed to such an extent that Alexander the Great found at least the south slope exhausted and almost woodless. The destruction by axe and fire of the celebrated forests of Sharon, Carmel and Bashan is the theme of the prophet Isaiah writing about 590 B.C.; and the widespread devastation of large forest areas during the Jewish wars is depicted by Josephus. In Greece, the Persian wars are on record as causes of widespread forest destruction. Yet in other parts, as on the island of Cyprus, which, originally densely wooded, had rapidly lost its forest wealth during Cleopatra’s time through the development of mining and metallurgical works, ship building and clearing for farms, the kings seemed to have been able to protect the remnants for a long time, so that respectable forest cover exists even to date.