Pliny the Elder described the production of Tyrian purple in his Natural History :
In his History of Animals , Aristotle described the shellfish from which Tyrian purple was obtained and the process of extracting the tissue that produced the dye .
Pliny the Elder described the production of Tyrian purple in purple 's Natural History :
In his History of Animals , Aristotle described the shellfish from which Tyrian purple was obtained and the process of extracting the tissue that produced the dye .