Sentence:  I slept soundly, and without feeling the least uneasiness, and am a great deal better this morning; neither do I find that the henbane has affected my head, which, from the great effect it had on me,—<WSD>exhilarating</WSD> me to the most extraordinary degree, and yet keeping me sleepy,—I feared it would. 
Meaning of the word marked with <WSD> tags:  To cheer, to cheer up, to gladden, to make happy.