In reply to your letter, I have to say that I think all stimulants, whether in the form of alcoholic drinks, tea or coffee, or tobacco, should be very moderately used. For my own part, I have never smoked or snuffed, and my daily allowance of alcoholic drinks is a so-called pint bottle of beer or two glasses of wine. I have more frequently suffered from nervous excitability due to tea or coffee, than from any other kind of stimulant. I can compose best when my brain is coolest and my digestion easiest. I do not believe in artificial stimulus to literary effort. J. D. EVERETT. February 22, 1882. PROFESSOR R. M. FAIRBAIRN, CHAIRMAN OF THE CONGREGATIONAL UNION OF ENGLAND AND WALES. I cannot say anything as to the effects of tobacco and alcohol upon the health. I never use either, and so can only say that in my case work has been done without their help. In the absence of data for comparison as to the effects of indulgence and abstinence, it would be foolish in me to express any comparative judgment; but it is only fair to say that so far as I am capable of forming any opinion on the matter, the abstinence has been altogether beneficial. R. M. FAIRBAIRN. February 16, 1882. MR. R. E. FRANCILLON. It so happens that your question belongs to a class of topics in which I have taken much theoretical interest. For my general views, I cannot do better than refer you to a paper of mine in the Gentleman's Magazine of March, 1875, called "The Physiology of Authorship;" but I fully agree with you that the settlement of the question can only depend upon the collection of individual experience. I have consciously studied my own, and can state it shortly and plainly. I am a very hard, very regular, and not seldom an excessive worker; and I find that my consumption of tobacco, and my production of work are in 'almost exact pro-portion, I cannot pretend to guess whether the work demands the tobacco or whether the tobacco stimulates the work; but in my case they are inextricably and, I believe, necessarily combined. When I take a holiday, especially if I spend it in the open air, I scarcely smoke at all; indeed, I find that bodily exercise requires no stimulant of any kind whatever. If I read, I smoke little; but if I produce, tobacco takes the form of a necessity, I believe--for I am indolent by _nature_, and tobacco seems to me to be the best machine for making work go with the grain that I can find. [Footnote: The wisdom of occasionally using these various stimulants for intellectual purposes is proved by a single consideration. Each of us has a little cleverness and a great deal of sluggish stupidity. There are certain occasions when we absolutely need the little cleverness that we possess. The orator needs it when he speaks, the poet when he Versifies, but neither cares how stupid he may become when the oration is delivered and the lyric set down on paper. The stimulant serves to