The agricultural yields were lower this year.
When scratched, it yields a black streak.
Crop yields are highly volatile and unpredictably so.
When heated with aniline it yields phenol and acetanilide.
The acid, when distilled slowly, is decomposed and yields a and 0-angelica lactones.
And, by the way, who estimates the value of the crop which nature yields in the still wilder fields unimproved by man?