In reply to your note, I beg to say--1st, that I have never been a smoker. 2nd, that I became a total abstainer from alcoholic liquors before I had attained the age of twenty. 3rd, that I have never kept my bed, I am thankful to say, for a day, in my life. 4th, that up to the age of twenty-four I rose at seven; and up to the age of twenty-seven, at six; since twenty-seven, at five a.m. 5th, that it is a common occurrence for me to have been (for some years past) at mental employment from six a.m., to seven p.m. 6th, that I do not find the least necessity for stimulants in the form either of tobacco or of alcohol. HENRY LANSDELL. March 13, 1882. REV. STANLEY LEATHES, D. D. I am not an habitual smoker, and therefore cannot speak about its effects; I find it an irritant rather than a sedative. But I am quite sensible of the virtue of an occasional glass of good wine, and am certain I can work better with than without it. STANLEY LEATHES. April 15, 1882. W. E. H. LECKY. I am not a smoker, and am therefore unable to give you any evidence on the subject. W. E. H. LECKY. February 7, 1882. DR. F. R. LEES. I have travelled in various parts of the world, from Greece to the Pacific, and from the Coasts of Labrador to the Southern States of North America, perhaps as much as any man living, and have never, in heat or cold, felt any inconvenience from my forty-eight years of abstinence. I have lectured for many nights consecutively on various topics during the intervals of that time, and have written thousands of articles on philosophy, temperance, physiology, politics and criticisms in papers and magazines, and published pamphlets and volumes equal to 25 octavos of small print; but have never required anything stronger than tea or coffee as a stimulant. The Alliance _Prize Essay_ (100 guineas) of 320 pages was composed and written in 21 days. I never smoke, snuff, or chew. I have known _many_ literary men ruined by smoking, and in all cases the continued use of tobacco is most injurious to the mind, as well as to the body. It _slays_ the nervous recuperative energy. F. R. LEES. November 17, 1882. MR. LEONE LEVI, F. S. A., BARRISTER-AT-LAW, Professor of the Principles and Practice of Commerce and Commercial Law, King's College, London. I have no hesitation in saying that I have never found the need of either tobacco or alcohol, or any other stimulants, for my intellectual efforts. I have never used tobacco in any form, and though occasionally, when my physical forces are much exhausted, I have derived benefit from a single glass of wine or ale, as a rule, and in my ordinary diet, I use nothing whatever but fresh water. This is my personal experience, and though I have worked very hard-often sixteen hours a day of continuous labour--I have always enjoyed, thanks to Providence, the best of health. LEONE LEVI. SIR JOHN LUBBOCK, BART. M. P.