{
  "id": "mulas-y-arrieria-de-las-indias",
  "type": "entity",
  "name": "Mules and the arriería — the freight system of Spanish South America, costed by a 1773 road book",
  "summary": "Everything moving inland in Spanish South America moved on mules, and a book printed in 1773 describes the industry from inside: the trick that made a mare raise a donkey foal, the price of a mule at each stage out of the pampas, the six-hundred-head droves assembled at Salta, and the finding that a well-fed coastal mule worked twenty years where a sierra mule worked five.",
  "locale": "en",
  "tags": [
    "transport",
    "animal-husbandry",
    "economic-history",
    "rio-de-la-plata",
    "peru",
    "argentina",
    "eighteenth-century",
    "technology",
    "indigenous-peoples"
  ],
  "relations": [
    {
      "rel": "related",
      "target": "lazarillo-de-ciegos-caminantes-1773"
    },
    {
      "rel": "related",
      "target": "first-colonial-horses-of-the-americas"
    },
    {
      "rel": "related",
      "target": "criollo-cattle-of-the-americas"
    },
    {
      "rel": "related",
      "target": "correos-de-las-indias"
    },
    {
      "rel": "related",
      "target": "mita"
    },
    {
      "rel": "related",
      "target": "oviedo-historia-general-y-natural-de-las-indias"
    }
  ],
  "questions": [
    "How were mules bred and raised in colonial South America?",
    "How did freight move between Buenos Aires and Peru before railways?",
    "What did a mule cost in the colonial Río de la Plata?",
    "How long did a working mule last in the Andes?",
    "What was the Salta mule fair?"
  ],
  "claims": [
    {
      "id": "c1",
      "text": "The Lazarillo de ciegos caminantes, printed in 1773 as the road book of an inspector of the mails between Buenos Aires and Lima, breaks off its itinerary to give the trade a section of its own, headed \"ORIGEN DE LAS MULAS\", explicitly addressed \"al Público ignorante en estas materias\" and offered as of more interest to the carriers than to the merchants. The subject is \"el origen, y propagacion de tanta multitud de Mulas, que nacen en las Pampas de Buenos Ayres de Madres Yeguas\" — the mule herd of the Río de la Plata, bred from mares, in a text that treats freight animals as worth explaining to a general reader.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.8
    },
    {
      "id": "c2",
      "text": "The husbandry problem it sets out is real and the solution is a piece of transferred technique rather than folklore. Mares, the book says, take naturally to the horse and jennies to the ass, and men who saw that a donkey and a mare produced an infertile animal that was nonetheless useful for work \"por su resistencia\" set out to increase it — but ran into the mare's reluctance to accept the jack, and more still to rear the mule. The remedy described is fostering by deception: shut the mare in a dark stable before she foals, and once she has foaled flay the foal and dress a newborn donkey in its skin, then introduce it to the mare \"para que le criase sin repugnancia\". Confidence is held at 0.75 because this is a traveller's explanation of a breeders' practice, given without a named informant.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.75
    },
    {
      "id": "c3",
      "text": "The book then costs the animal at every stage, which is what makes it unusual. Driving each mule from the campaigns of Buenos Aires to the city of Córdoba and its neighbouring potreros is reckoned at four reales, apart from the owner's own outlay and the principal cost. In those potreros the young mules are wintered — \"aquellas Mulas tiernas, y que regulan de dos años, catorce meses, poco mas, ò menos\" — at five to six reales a head paid to the owner of the pasture, plus six mules per hundred as refacción, \"que vienen à salir à ocho reales de costo cada una en la invernada\". The pasture owner is bound to deliver back the number bearing his brand, thin or otherwise, and to replace those missing.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.8
    },
    {
      "id": "c4",
      "text": "The wholesale arithmetic follows on the next page. A mule taken out of Córdoba from those brought up from the Buenos Aires campaigns \"tiene de costo veinte y seis reales poco mas, ò menos. Su valor en Cordova es de treinta y seis reales poco mas, ò menos, por lo que regulada cada Tropa de à seiscientas Mulas, con la rebaja del seis por ciento, se adelanta en cada una setecientos cinquenta pesos\" — before deducting the buyer's and his servants' expenses over the more than two years the going, staying and return consume. The droves then make their second stage to Salta, \"adonde se hace la Asamblea General\", leaving Córdoba at the end of April or the beginning of May. A drove is six hundred head; the outfit runs on a two-year cycle; the profit is stated in pesos.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.8
    },
    {
      "id": "c5",
      "text": "The passage worth keeping is the one comparing two ways of keeping the same animal. The coastal muleteers, it says, maintain their mules by paying for alfalfa every night, and where there is no alfalfa and it is not the season of the lomas they reinforce them with maize cobs carried as a provision; so they manage two or three journeys a year over the same distance, load more arrobas, and keep their animals sound four times as long as the sierra men do. The figures are given plainly: a sierra mule \"serà de servicio cinco años, y una de estas, veinte: La primera harà cinco viages en los referidos cinco años, y la segunda harà à lo menos quarenta en los veinte años, que regulo de vida à una Mula bien tratada, aun que sea en continuo trabajo.\" An eightfold difference in lifetime work from feeding, argued in an eighteenth-century Spanish American imprint.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.8
    },
    {
      "id": "c6",
      "text": "The counterpoint is in the book itself, and it cuts against its author. Explaining the \"mortandad de infinidad de Mulas en la Sierra\", he lays it \"principalmente entre los Indios\", whom he calls his good countrymen and whom he blames for thinking a mule's life and service last only \"lo que dista de un Repartimiento à otro\", for not distinguishing a pack mule from a saddle mule, and for using the same animal for both on the third day. But the sentence that carries the accusation also carries its cause: \"como no les reparte el Corregidor mas que una\" — the animal was not bought, it was allotted to them under the corregidor's repartimiento, the forced distribution of goods at set prices. A man given one mule by a magistrate whose next consignment is already coming is being described, and the book blames his husbandry. Confidence is low deliberately: the author's judgement is an interested one, and this object states the mechanism his own clause supplies rather than his conclusion.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.7
    },
    {
      "id": "c7",
      "text": "The same page records the other end of the animal's life: mules disabled for heavy work, \"por Cojas, Mancas, ò Deslomadas, de que hay una multitud considerable en la Sierra\", pass to the Indians, \"para cargar sus ligeros Hatos, y conducirlos à corta distancia\". The system's worn-out stock is where the indigenous carriers' stock came from.",
      "sources": [
        "lazarillo-ciegos-caminantes-1773"
      ],
      "confidence": 0.75
    },
    {
      "id": "c8",
      "text": "The founding stock behind all of it is documented two and a half centuries earlier, in the Caribbean, by Oviedo — with a caution about what he actually says. Writing of Hispaniola he records that \"se truxeron las primeras yeguas del Andaluçia, y hay tantos caballos é yeguas, que han valido á quatro é á tres castellanos\", alongside the first cattle, and that both cattle and pigs had gone feral in numbers. That passage is about horses, not mules: it is cited here for the Andalusian mares and the collapse in price that made large-scale breeding possible in the Indies, and not as evidence about mule-breeding, which he does not describe there.",
      "sources": [
        "oviedo-historia-1851-tomo1"
      ],
      "confidence": 0.8
    }
  ],
  "takeaways": [],
  "faqs": [],
  "evidence_tier": "primary",
  "evidence": {
    "level": "industry_observation",
    "source_types": [
      "paper"
    ]
  },
  "moat_flag": false,
  "winning_edge": "The mule is the single most important machine in three centuries of Spanish American economic life and there is almost no accessible English account of how the industry actually worked. This object is built from the pages of a 1773 imprint rather than from summary: the section headed Origen de las Mulas and its fostering technique, the cost of a mule at four reales to Córdoba and eight through the wintering, twenty-six reales of cost against thirty-six of value, the six-hundred-head drove and the seven hundred and fifty pesos it advanced, the Salta assembly and its departure date, and the five-year sierra mule set against the twenty-year coastal one. It then quotes the author blaming Andean villagers for the animals' deaths and shows, from his own clause, that the corregidor's repartimiento put the mule in their hands in the first place — the counterpoint taken from inside the source rather than imported to balance it.",
  "confidence": 0.8,
  "last_verified": "2026-08-16",
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    "name": "Mules and the arriería — the freight system of Spanish South America, costed by a 1773 road book",
    "description": "Everything moving inland in Spanish South America moved on mules, and a book printed in 1773 describes the industry from inside: the trick that made a mare raise a donkey foal, the price of a mule at each stage out of the pampas, the six-hundred-head droves assembled at Salta, and the finding that a well-fed coastal mule worked twenty years where a sierra mule worked five.",
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        "name": "El Lazarillo de ciegos caminantes desde Buenos-Ayres hasta Lima",
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