unmetamorphosed

The bull’s head is, indeed, here half humanised, having only the horns and ears of the animal ; while in the more ancient fragment above cited both symbols are unmetamorphosed.

1818, R. P. Knight, “An Inquiry into the Symbolical Language of Ancient Art and Mythology”, in Specimens of Ancient Sculpture, Ægyptian, Etruscan, Greek, and Roman, volume II, London: Society of Dilettanti, published 1835, page 50

Hence, the mean composition of the argillaceous sediments of any geological epoch, or, in other words, the proportion between the alkalies and the alumina, will depend not only upon the age of the formation, but upon the number of times which its materials have been broken up, and the periods during which they have remained unmetamorphosed and exposed to the action of infiltrating waters.

1863 November 28, T. Sterry Hunt, “On the Chemical and Mineralogical Relations of Metamorphic Rocks”, in American Journal of Science and Arts, volume XXXVI, page 220