or piece of research, as the case may be, is something to look forward to during one's routine hours as a pleasure and inspiration, and no amount of extra time and labour spent upon it is begrudged. Scientific observation and investigation begets the spirit of contentment, and by this I do not mean a spirit of complacency with one's own achievements or a losing of interest in other aspects of life, but rather a broad sure knowledge that life is able to be happy and satisfying. As Robert Louis Stevenson has expressed it, “The world is so full of a number of things, I'm sure we should all be as happy as kings.” Now if science can do that for individuals, then this constitutes a strong argument for bringing science within the reach of as many people, both young and old, as possible. This world seems to be becoming in many ways a harder and more depressing place to live in every year, and everything that can be done to counteract this feeling of depression and constant anxiety should be done. Again, familiarity with scientific facts and methods and principles can develop in individuals other very desirable and strong qualities of temperament and character, such as zeal for truth, intellectual honesty, frankness, humility, broadmindedness, a desire to learn the opinions of other people, enthusiasm for progress, optimism. All of these qualities you will recognise as being characteristic of the true scientific mind. They are very much needed in the everyday life of the man in the street and of all persons in authority. If science can help in developing them, let us by all means make science more available for the people. A Gap Between Science and the People. I cannot help thinking that, in spite of the existence of many agencies for spreading the influence of science, there is an everwidening gap between science and the people. Let me explain what I mean by this gap. To repeat, the real appreciation of the principles and the romance of science can only come from personal participation in some or other of its many fields. This participation may or may not be of an intensive nature, but it must be actively personal. It seems to me that along with the rapid progress of science in this and the preceding generation there has not been a corresponding increase in the part it plays in the culture of the average individual. The people as a whole look upon science as something which is done for them, on their behalf, rather than as something which the individual himself can take an active part in and enjoy. It is as if, with respect to music, the people as a whole gave up such personal activities as singing and instrumental work and became content merely with listening to what experts provide for them. Or as if, with respect to literature, the people no longer read the classics of poetry and prose, but merely the opinions of experts on them. It is of course true that every branch of science can claim among its devotees a few enthusiastic amateurs who derive a lively