Publisher's Synopsis
Excerpt from The Oyster, Clam, and Other Common Mollusks
The largest oysters* procurable are of course the best for teaching purposes 5 but small ones can be used, though less effectually.
They should be cleaned with a sponge, just enough to remove the dirt, without destroying the brown, horny Skin covering the shell, which sometimes is quite per feet, though generally more or less worn off. They can be killed by laying them in fresh water, which is kept at a blood heat, or about 90° F ahr. This is a slow process, however, twenty-four hours being re quired sometimes. It may be quickened by nicking or filing the edges until two small holes are Opened, admitting the water directly into the interior. It will often be found advisable to put wedges between the valves when they open, after the death of the animal, and leave the shells for some hours.
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