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.
I have discovered a collection of beautiful photographs of animals in preserved in formalin on a website called Hemmy.net, via the afore mentioned E-L-I-S-E blog. I can not find any citation for the museum where they were shot or the photographer's name; I suspect, per the familiar looking labels and specimens, that the photographs were taken at the Hunterian Collection in London, but have no idea about the photographer--does anyone out there have any ideas?
To see the full collection of photos, visit Hemmy.net.