[Illustration: 3. Poporo of an old man.] As we have said before, the Indian never parts with his _poporo_, let him be awake or asleep, at home or on his travels, the _poporo_ is always attached to his belt. An Indian would part with all he holds most dear in the world, all, except his _poporo_. We have the rare and good fortune to possess a _poporo_, of which we give a picture (fig. 3). It is, we believe, the only specimen existing in Europe. We owe it to the kindness of M. Gauguet, who has made numerous voyages to Colombia, where he has been able to establish so much sympathy among the natives that one of their old chiefs, who was specially indebted, did not fear to depart from all custom and to incur the contempt of his companions, by offering him, as a pledge of friendship, the object to which he attached the greatest value—his _poporo_![3] Thus the great importance that an Indian attaches to Coca is easily shown. It should be recognized, moreover, that the first conquerors of the country did not fail to countenance the passion of the vanquished for the national plant. In fact, they quickly recognized that the habit of consuming Coca might become an excellent source of revenue; and Garcillasco de la Véga, a half-breed of the first generation, tells us that in his time a part of the impost was paid to the conqueror in the form of Coca leaves. The benefits which were derived from the traffic in this plant were such that at a certain time the revenues of the bishop and of the canons of the cathedral of Cuzco came from the tithe on these leaves. There was, moreover, another object in favoring the use of Coca among the Indians. The latter were treated, as is known, as if they were beasts of burden, and their oppressors were not slow to recognize the fact that they furnished much better labor when they consumed Coca. We shall see, further on, that the recognition of this fact, the correctness of which cannot be disputed, and which served to excite the rapacity of the conquering savages of that time, has become to-day the means of furnishing one of the most valuable aids to contemporary therapeutics. The particular favor in which the plant was held in the beginning of the conquest, was destined to suffer some disturbance. In the seventeenth century, for example, the religious quibbles regaining the ascendancy in public affairs, some sedate theologians pretended that Coca was an aliment, and that under this name the use of it should be prohibited to young people and before the communion. The question was vigorously contested, and there is no doubt that the consumption of Coca would have sustained a very decided blow had not Prince don Alonzo de la Pina Montenegro declared that the plant contained no alimentary principle. This point we shall presently consider from a scientific point of view.