Sentence:  These were sometimes stinging like the preachers at Paul's Cross, often eloquent like Bossuet, and the louder the Doctor's flock snored the greater satisfaction his conscience; indeed it was safest to be hard on them when they were asleep. At any rate he it was probably first diffused in Trinity the <WSD>papaverous</WSD> air which still exists there. 
Meaning of the word marked with <WSD> tags:  Inducing sleep; soporific.