In the preservation of animal specimens for study, animals are usually preserved using formalin where the whole body would be immersed in the posture in which it is supposed to stay permanently because it will be hardened. The ratio of formalin to carcass must at least be 12 to 1 to ensure a good fixation.
The images were taken over the course of three years at the Royal College of Surgeons, London. They are of 200 year old animal specimens which were preserved by pioneer anatomist John Hunter (1728 - 1793).
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