Again, several of the pygopagous twins, of whom there are scientific records, survived birth and lived for a number of years, and thus resembled the Biddenden terata.

Helen and Judith, for instance, were twenty-three years old at death; and the North Carolina twins, although born in 1851, are still alive.

There is, therefore, nothing inherently improbable in the statement that the Biddenden Maids lived for thirty-four years.

With regard also to the truth of the record that the one Maid survived her sister for six hours, there is confirmatory evidence from scientifically observed instances, for Joly and Peyrat (Bull.

de l'Acad.