The intolerance of the Spanish clergy increased in an exact ratio with the decadence of Moslem power. As ecclesiastical supremacy became strong enough to control the policy of the throne, the privileges of the Jews, already greatly curtailed, were almost entirely abolished. As yet, however, the sovereign was unable to dispense either with the taxes they paid, which were the most important part of the royal revenues, or with the financial talents and sterling honesty which insured their proper disbursement. It was not until the reign of Ferdinand and Isabella that fanaticism was allowed to prevail over the wise and prudential considerations of policy which, though frequently interrupted by scenes of horror and carnage, had in practice ignored for centuries the fulminations of ecclesiastical synods and councils. As the rise of Hebrew greatness in the Peninsula dates from, and is attributable to, the Moslem conquest, in like manner its decay progressed with the declining fortunes of the Saracens, and its destruction was coincident with the disappearance of their empire. Scattered throughout Europe, the Jews alone preserved for future generations the precious heritage of Arab science and culture; and had they not proved capable of retaining and transmitting it, the discoveries of Moorish genius, banished with those who made them, would have been forever lost to posterity. The effects of civilization, whose arts, distributed through the agency of the Hebrews, were productive of such great results, were principally manifested, as might readily be conjectured, in the countries contiguous to or most intimately connected with the Peninsula. The tide of Hebrew emigration and trade rolled steadily into France, Portugal, Italy. The states of Provence and Languedoc, under the Gothic name of Septimania, early overrun by the conquerors of Spain, were, long prior to that time, subject to Hebrew influence. Attracted by the salubrious climate and the excellent commercial facilities of the coast, the Jews settled there in great numbers. The overthrow of the Mohammedan power in that region was not followed by the immediate abolition of the social and educational systems which it had inaugurated, and whose perpetuation was insured by the most favorable climatic and ethnological conditions. At Lyons, the Jews at one time were held in such esteem that the market day was changed from Saturday to Sunday in deference to their religious prejudices. In Provence, practically free from the humiliating distinctions of caste, they enjoyed the same privileges and were entitled to the same protection as other citizens. At Béziers, Carcassonne, Avignon, Montpellier, and Narbonne the Hebrew element predominated. It has already been stated that the famous school of Montpellier owed its origin to the Arabs and the Jews. The Moslem conquest vastly increased the Hebrew population, which had already been numerous in Southern France for more than eight hundred years.