Necessary intromission
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
That kind of intromission or interference where a husband or wife continues in possession of the other's goods after their decease, for preservation.
Wharton.
In English law
Dealings in stock, goods, or cash of a principal coming into the hands of his agent, to be accounted for by the agent to his principal.
Stewart v. McKean, 29 Eng. Law & Eq. 391.