This mutational gathering of the municipal council was the only outward sign of anxiety to be found in this picturesque township.
"My Home In The Field of Honor"
Frances Wilson Huard
They are of the same order as the mutational variations of the modern biologist upon which the appearance of a new character depends.
"Darwin and Modern Science"
A.C. Seward and Others
What is a genetic or mutational variation?
"Darwin and Modern Science"
A.C. Seward and Others