Feeding the axolotl on thyroid gland produces the metamorphosis very quickly, even if the axolotl is kept in water.
"The Glands Regulating Personality"
Louis Berman, M.D.
In the reptile house at the London Zoological Gardens full-grown examples of the common black axolotl and the pretty white variety are exhibited.
"The Glands Regulating Personality"
Louis Berman, M.D.
Chauvin on the Transformation of the Mexican axolotl into Amblystoma.
"Natural Law in the Spiritual World"
Henry Drummond