Ambler Jevons was never communicative. But as he sat before me his brows were knit in deep thought, his hands chafed with suppressed agitation, and he took a second brandy-and-soda, an unusual indulgence, which betrayed an absent mind. At length he rose, carefully brushed his silk hat, settled the hang of his frock-coat before the glass, tugged at his cravat, and then, putting on his light overcoat, announced his readiness to set out. About half-an-hour later our cab set us down in Upper Street, Islington, close to the Agricultural Hall, and, proceeding on foot a short distance, we turned up a kind of court, over the entrance of which a lamp was burning, revealing the words "Lecture Hall." Jevons produced two tickets, whereupon we were admitted into a long, low room filled by a mixed audience consisting of men. Upon the platform at the further end was a man of middle age, with short fair beard, grey eyes, and an alert, resolute manner--a foreigner by his dress--and beside him an Englishman of spruce professional appearance--much older, slightly bent, with grey countenance and white hair. We arrived just at the moment of the opening of the proceedings. The Englishman, whom I set down to be a medical man, rose, and in introducing the lecturer beside him, said: "I have the honour, ladies and gentlemen, to introduce to you Doctor Paul Deboutin--who, as most of you know, is one of the most celebrated medical men in Paris, professor at the Salpetriere, and author of many works upon nervous disorders. The study of the latter is not, unfortunately, sufficiently taken up in this country, and it is in order to demonstrate the necessity of such study that my friends and myself have invited Doctor Deboutin to give this lecture before an audience of both medical men and the laity. The doctor asks me to apologise to you for his inability to express himself well in English, but personally I have no fear that you will misunderstand him." Then he turned, introduced the lecturer, and re-seated himself. I was quite unprepared for such a treat. Deboutin, as every medical man is aware, is the first authority on nervous disorders, and his lectures have won for him a world-wide reputation. I had read all his books, and being especially struck with "Nevroses et Idees Fixes," a most convincing work, had longed to be present at one of his demonstrations. Therefore, forgetful that I was there for some unknown reason, I settled myself to listen. Rapidly and clearly he spoke in fairly good English, with a decision that showed him to be perfect master at once of his subject and of the phrases with which he intended to clothe his thoughts. He briefly outlined the progress of his experiments at the Salpetriere, and at the hospitals of Lyons and Marseilles, then without long preliminary, proceeded to demonstrate a most interesting case.