W. BOYD DAWKINS, M. A., F. R. S., F. G. S. PROFESSOR OF GEOLOGY, OWENS COLLEGE, MANCHESTER. I have received your note asking about the effect of alcohol on my health and work. I cannot say that they influence either; I find, however, that I cannot drink beer when I am using my brain, and, therefore, do not take it when I have anything of importance to think about. I look upon tobacco and alcohol as merely luxuries, and there are no luxuries more dangerous if you take too much of them. I find quinine the best stimulant to thought. W. BOYD DAWKINS. February 16, 1882. The Rev. ALEX. J. D. D'ORSEY, B. D., LECTURER ON PUBLIC READING AND SPEAKING AT KING'S COLLEGE, LONDON. For my own part, I am decidedly averse to the use of tobacco and stimulants. I am myself a total abstainer (not pledged), and I have never smoked in my life. I always do my utmost to dissuade young and old alike to abstain from even the moderate use of tobacco and stimulants, as in the course of a long and laborious life, speaking much and preaching without notes, I have always felt able to grapple with my subject, with pleasure to myself and with profit, I trust, to my hearers. A. J. D. D'ORSEY. March 17, 1882. MR. EDMUND O'DONOVAN, SPECIAL CORRESPONDENT OF THE "DAILY NEWS." As far as my experience goes, the use of stimulants enables one at moments of severe bodily exhaustion to make mental efforts of which, but for them, he would be absolutely incapable. For instance, after a long day's ride in the burning sun across the dry stony wastes of Northern Persia, I have arrived in some wretched, mud-built town, and laid down upon my carpet in the corner of some miserable hovel, utterly worn out by bodily fatigue, mental anxiety, and the worry inseparable from constant association with Eastern servants. It would be necessary to write a long letter to the newspapers before retiring to rest. A judicious use of stimulants has, under such circumstances, not only given me sufficient energy to unpack my writing materials, lie on my face, and propped on both elbows, write for hours by the light of a smoky lamp; but also produced the flow of ideas that previously refused to come out of their mental hiding places, or which presented themselves in a flat and uninteresting form. I consider, then, the use of alcoholic and other stimulation to be conducive to literary labours under circumstances of physical and mental exhaustion; and very often the latter is the normal condition of writers, especially those employed on the press. Perhaps, too, in examining into the nature of some metaphysical and psychological questions the use of alcohol, or some similar stimulant, aids the appreciation of _nuances_ of thought which might otherwise escape the cooler and less excited brain. On the other hand, while travelling in the East during the past few years, and when, as a rule, circumstances precluded the possibility of obtaining stimulants, I