I have mentioned only three classes of Radiates. Cuvier had five in his classification ; for he placed among them the Intestinal Worms and the Infusoria or Animalcules. The Intestinal Worms are much ...

Learning about family history can be a challenge for Black Americans. Because of slavery, it is often difficult for them to trace their ancestry prior to the 1870 census. Records of the enslaved are ...

Alisha Palmer does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...