the world > action or operation > advantage > usefulness > use (made of things) > instrumentality > by the instrumentality of [phrase] > specifically a person (2)
through a person's hands (also †hand), through the hands of a person: so as to be handled or dealt with by the specified person. through many hands…
With reference to action performed with the hand, and hence to action generally; (in later use) esp. the agency or instrumentality of a person…