I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.
![I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.](http://cdn.quoteddaily.com/images/joseph-priestley/i-have-procured-air-oxygen--between-five-and-six-times-as-good-as-the-best-common-air-that-i.jpg)
I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.