I fear I shall be unable to add to your fund of information. Never having used spirituous or vinous stimulants, or tobacco in any form, I have no personal "experience" of the way they affect the mental faculties of those who use them. G. W. CHILDS. Sept. 30, 1882. M. JULES CLARETIE, PARIS. I should have been glad to reply to your question from my personal experience, but I do not smoke, and have never in all my life drunk as much as a single glass of alcohol. This plainly shows that I require no "fillip" or stimulant when at work. Tobacco and alcohol may cause over-excitement of the brain, as does coffee, which I am very fond of; but, in my opinion, that alone is thorough good work which is performed without artificial stimulant, and in full possession of one's health and faculties. The reason we have so many sickly productions in our literature arises probably from the fact that our writers, perhaps, add a little alcohol to their ink, and view life through the fumes of nicotine. M. JULES CLARETIE. Feb. 26, 1882. MR. HYDE CLARKE, F. S. S. As I am not an adherent of the teetotal abstinence movement, I beg that everything I write may be accepted with this reservation. I have never seen that any great thinker has found any help or benefit from the use of stimulants-either alcohol or tobacco. My observations and experiences are unfavourable to both classes of stimulants. In my own case, I gave up smoking before my scientific work began. Alcoholic drinks I used moderately, but I was a water drinker chiefly. Of late years, from illness, I have given up alcoholic drinks; but were I in full health, I should use them moderately. In the course of a public life of about forty years, I have seen the ill-effects of drinking upon many journalists and others; but it appears to me that smoking produces still greater evil. A man knows when he is drunk, but he does not know when he has smoked too much, until the effects of accumulation have made themselves permanent. To smoking are to be traced many affections of the eyes, and of the ears, besides other ailments. I have heard much said in favour of smoking and drinking, but never saw any favourable result. The communication of the evil results of these stimulants to offspring appears to me to constitute a further serious objection to them, I approve fully of your object, but as I do not go to the length of total abstinence advocates, I am desirous not to be misunderstood. Several years of my life were spent in the East, and my experience there only confirms me the more. I have known many drunkards among literary men, and the stimulants they took never helped their work; and it was only because they were men of exceptionally strong brain that their excesses did not incapacitate them. There are many excesses of this kind that are equally misunderstood by those who indulge in them, and by temperance writers. There are, in fact, many men of enormous power, who can smoke and drink all day long.