Sentence:  One saint's day in mid-term a certain newly appointed suffragan-bishop came to the school chapel, and there preached on “The Inner Life.”  He at once secured attention by his informal method, and when presently the <WSD>cough</WSD>ing of Jarvis […] interrupted the sermon, he altogether captivated his audience with a remark about <WSD>cough</WSD> lozenges being cheap and easily procurable. 
Meaning of the word marked with <WSD> tags:  To push air from the lungs in a quick, noisy explosion.