"Quite so," agreed Humphreys. "And you must also remember that there is always the element of luck, or chance, or whatever you please to call it, in the background, and to be watched for. Opportunity often presents itself literally at a moment's notice and in the most unexpected fashion, and the one who profits by it is he who is alert enough to seize it as it passes. But there is one thing you must do, Dick; you must take with you a well-stocked chest of drugs, as well as your case of surgical instruments; and, since you will not let me lend you any money to help you on your way, you must allow me to make you a present of that medicine chest just as a token of my appreciation of the way in which you have conducted yourself as my pupil-- Nay, boy, you must not refuse me, for if you do I shall be deeply hurt as well as seriously offended." "Very well, then," acquiesced Dick, "since you put it in that way, and so very strongly, I will accept your generous gift with a thousand most hearty thanks, not only for the gift itself, but also for the kindly feeling that prompts it." "My dear Dick," protested Humphreys, "there is really no reason at all why you should feel so extraordinarily grateful, for in doing what I propose to do I shall only be very inadequately repaying you for much valuable assistance rendered, and much very pleasant companionship during the time of your pupilage with me. And do not think that because I have not expressed much voluble regret at this abrupt severance of our connection I do not feel it, for I do very keenly, I assure you; but I see quite clearly that the thing is inevitable, therefore to complain about it would be both useless and foolish. "Now, there is one other way in which I can help you; and when I have explained to you how tremendous is the power which I propose to place in your hands you will understand, more clearly than I could show you in any other way, the absolute trust that I repose in you. For I tell you this, Dick, in all sincerity, there is not another person in the whole circle of my acquaintance--and it is pretty wide--whom I feel I could safely trust with this power, so potent is it for evil as well as good. But I am convinced that I can trust you; and that is why I have determined to endow you with the ability to perform deeds which to many people will seem positively miraculous.