The Indians of the Reductions were taught all the trades, and became carpenters, joiners, painters, sculptors, masons, goldsmiths, tailors, weavers, dyers, bakers, butchers, tanners etc., and their artistic ability is still seen in the ruins of the missions. They were also cultivators and herdsmen, and some of the stations could count as many as 30,000 sheep and 100,000 head of cattle. They built fine roads leading to the other Reductions, and, on the great waterways of the Paraná alone, as many as 2000 boats were employed transporting the merchandise of the various centres. They were, above all, taught their religion, and their morals were so pure that the Bishop of Buenos Aires wrote to the king that he thought no mortal sin was ever committed in the Reductions. The churches occupied the central place in the villages, and their ruins show what architectural works these men of the forest were capable of accomplishing. The streets were laid out in parallel lines, and the principal ones were paved. In course of time the primitive huts were replaced by solid stone houses with tiled roofs, and were so constructed that connecting verandas enabled the people to walk from house to house, under shelter, from one end to the other of the settlement. The Reductions extended as far as Bolivia on one side, and to northern Patagonia on the other, and from the Atlantic to the Andes. Altogether there were about a hundred of them, and as their formation required the subduing and transforming of the wildest type of savage into a civilized man, it is not surprising that in effecting this stupendous result as many as twenty-nine Jesuits suffered death by martyrdom. In 1598 the Jesuits Medrano and Figuero were in Nueva Granada or what is now called The United States of Colombia. They also buried themselves in the forests, after having done their best to reform the morals of the colonists at Bogotá. Not that they had abandoned the city; on the contrary, they established a college there in 1604, and others later in Pamplona, Mérida and Honda. At first the natives fled from them in terror, but little by little, the presents which these strange white men pressed on them won their confidence, and helped to persuade them to settle in Reductions. Three of the Fathers lost their lives in that work, devoured by cougars or stung by venomous serpents. Unfortunately, the bishop was persuaded that the Indian settlements were merely mercantile establishments gotten up by the Jesuits for money-making, and all the fruit of many years of dangers and hardships was taken out of their hands and given to others.