All 5 Uses of

vice versa
in
The Magic Mountain

He came from Mecklenburg, and to judge from appearances, he was obviously the product of an ancient mixing of races, the blending of Germanic blood with Slavic-Wendish, or vice versa.†
Chpt 4.5 *

And indeed new costumes arrived now: ladies in men's clothes, their ample curves making them look as implausible as characters in an operetta, an effect accentuated by black beards drawn on their faces with burnt cork; and vice versa, gentlemen attired in women's clothes, tripping over their skirts—including Rasmussen the student, who wore a black, jet-trimmed gown, its decolletage revealing a pimply chest and ditto back, both of which he tried to cool with a paper fan.†
Chpt 5.9

He had been part of this world too long for that; and it was not he who made use of it against this aggressor, but vice versa; so that everything happened now with a kind of matter-of-fact simplicity—from the first moment when the consul felt a vague suspicion drift over him, emanating from his nephew and telling him that his project was hopeless, until the very end, the final conclusion, to which, admittedly, Hans Castorp could not help appending a melancholy smile.†
Chpt 6.5

And the physical merges into the intellectual, and vice versa, and cannot be differentiated, and stupidity and cleverness cannot be differentiated.†
Chpt 7.4

Definition:

with the order reversed