Religious dogma was held in that age to be axiomatic and incontrovertible; all science was interpreted through the medium of the one universal science of theology, and the civil law of the times drew its sanction from the principles of canon law, from which indeed it was scarcely separable. Just as it was sought to sustain Galileo’s proposition concerning the revolution of the earth by an appeal to theology, and just as theologians were considered competent to pronounce on the soundness of the theories of Columbus, so was it admitted, with far greater reason, to be within their competence to pronounce upon the question of the extension of slavery in the Indies, although that matter was treated as one of secular policy, belonging to the India Council. Kings and governments contended, when they could, for the exercise of their royal powers in temporal matters, independently of the spiritual control, but the line of distinction was a fine one, not easily drawn, and the basis of Spain’s claim to the Indies and to the exercise of jurisdiction in America was the Bull of Alexander VI. issued in May, 1493. The express condition on which the Pope granted the Bull was, that the conversion of the Indians should be the primary care of the Spanish government, and this condition was so clear and binding that it amounted to a reservation to the Pope of an oversight of the means to be adopted for that end. As it was within the recognised power of the Pope to grant such rights and jurisdiction, and to attach conditions thereto, it was equally within his power to annul or withdraw them if the Spanish sovereigns failed to fulfil those conditions. Hence the government of the Indies, in all that pertained to the moral well-being and religious instruction of the natives, was, beyond question, within the legitimate exercise of ecclesiastical control. The exposition of the case by Las Casas, supported by the mass of evidence he was able to furnish and the testimony of the Scotch Franciscan and others, convinced the theologians that their duty, both to religion and to the King bound them to intervene and to correct abuses in open violation of the declared intentions of the sovereigns from the time of Isabella that the Indians should be free men, whose conversion to Christianity was their first duty. The theologians bound themselves by a common oath, that no opposition should discourage them, and that each and all of them would not desist from their single and united efforts, until success had crowned them. It was decided that the first step should be to exhort the members of the Council: this failing of result, they would address their remonstrances to the Chancellor, after him to M. de Chièvres, who was nearest the person of the King, and in the last resort the monarch himself should be made to understand his responsibility. Should nothing come of their exhortations, they bound themselves to preach openly against the government, instructing