Definition of "Teutonic"

He waited and waited, in the faith that Schinkel was dealing with them in his slow, categorical Teutonic way, and only objurgated the cabinetmaker for having in the first place paltered with his sacred trust. […]

1886, Henry James, The Princess Casamassima, volume 3, London: Macmillan and Co., page 190

My disorderliness was anathema to his Teutonic soul. “Here, I will write it down. Oh, you are so chaotic. Hand me the telephone.”

1998 August 17, Adam Gopnik, “Man Goes To See a Doctor”, in The New Yorker‎