The fires of Jorullo have ceased to burn for half a century. The central crater that was eventually formed, and the numerous little orifices of fire, have long since become cold, and all the evidences of an active fire have passed away. But to this day the Indians watch the progress of the cooling process; as they anticipate that, before many years have passed, the unfulfilled portion of the curse will be realized, and that those now live who will see the surrounding mountains covered by perpetual snow--an evil which the half-clad Indians of the tropics appear to dread more than perpetual fire. The last and only enumeration of the inhabitants of Mexico or New Spain was made in 1794, by that distinguished Vice-king to whom I have so often referred, Ravillagigedo. This enumeration gave as the actual population 3,865,529, besides the departments of Vera Cruz, Guanajuato, and Cohahuila, which were estimated to contain 518,000 more, making a sum total of 4,412,529. Since that time there has been a great deal of extensive guessing, until by this simple process the population was brought up to 7,661,520, in 1853.[62] The process by which this increase is effected is to add one sixth for supposed omissions in the census, and a like number for supposed increase in the subsequent fifteen years till the breaking out of war, and taking for granted that the population has not retrograded during forty-five years of intermittent war. Such conclusions are made in violation of all the laws of population. POPULATION OF MEXICO. It may not be uninteresting to my readers to run over the laws which regulate the decrease of population, although it is too much our custom to look only at the other side of the picture. The social and civil wars of Mexico have been of such a character, as we have seen, as to warrant the belief that from this cause alone population must have constantly diminished, from their very commencement in 1810 until 1840, when matters were comparatively resuscitated. The employment for labor during the time that the large estates were neglected, and while the canals of irrigation and the silver mines were in ruins, was of the most limited character; and the very indigent circumstances to which it reduced the majority of those who ranked above the _leperos_ must also have diminished the population of the republic much below that of the vice-kingdom under Ravillagigedo.