https://books.google.es/books?id=MzIoAQAAMAAJ&pg=PA312&lpg=PA312&dq=charles+evanson+cork&source=bl&ots=7fPMpDezXb&sig=rLFBQoo39ia5q_gVPKHCrDlkn1U&hl=en&sa=X&ved=0ahUKEwj4lKnMwuXKAhWLFx4KHeX7Cq4Q6AEIKDAE#v=onepage&q=charles%20evanson%20cork&f=false