Angelo Mariani, Coca and its Therapeutic Application…
“ The only occupation of the first days of the adult is the much-loved quid of Coca and the encrusting of his gourd, which we cannot do better than compare to the coating of the pipe, with this difference that our confirmed smokers blacken hundreds of their pipes during their existence, while the Indian encrusts only one gourd in his whole life; so that by the thickness of the crust formed around a poporo, it is possible to judge the age of its owner. ”
