medium

Whether any other Liquours, being made Mediums, cause a Diuersity of Sound from Water, it may be tried:

...at all events, she drank in with eager ear, and admiring mind, anecdote and history of all those excellent traits of disposition, and nobleness of conduct, which made him the idol of his describer, and gave her a knowledge of his temper and character, and the manner in which his boyhood and youth had passed, which she could never have gained by any other medium, and which it was unquestionably right she should know.

In some instances one can take advantage of differential carbohydrate fermentation capabilities of microorganisms by incorporating one or more carbohydrates in the medium along with a suitable pH indicator. Such media are called differential media (e.g., eosin methylene blue or MacConkey agar) and are commonly used to isolate enteric bacilli.

The density of the living medium of fishes exerts upon them a mechanical influence; they are, so to say, balanced in water, free to proceed in all planes of direction...

His loyalty to the English was doubtful and wavering, and his opposition to Post's journey was probably due to fears that his own importance as a medium between the Ohio Indians and the English would be diminished by the former's success.