A comedian works with his collection of jokes, traditionally called “material”, but the chemist works with “materials” (chemicals). Note that Horace is about to mix the contents of two test tubes.
Definitions of “blustery” that I’ve seen say that it’s wind speeds between 15 and 25 mph, but with cooler or colder temperatures than “mild” – in which case it would be “breezy”.
A comedian works with his collection of jokes, traditionally called “material”, but the chemist works with “materials” (chemicals). Note that Horace is about to mix the contents of two test tubes.