What is the literary term that is being use in this quote from The Scarlet Letter: “it seemed never to have known a youthful era.”

What is the literary term that is being use in this quote from The Scarlet Letter: “it seemed never to have known a youthful era.”
What is the literary term that is being use in this quote from The Scarlet Letter: “it seemed never to have known a youthful era.”

 
What is the literary term that is being use in this quote from The Scarlet Letter: “it seemed never to have known a youthful era.”