The real detective is the one who, taking up the solution of a crime or other mystery, brings to bear upon it _unusual_ powers of observation and deduction and an exceptional resourcefulness in acting upon his conclusions. Frankly, I have known very few such, although for some ten years I have made use of a large number of so-called detectives in both public and private matters. As I recall the long line of cases where these men have rendered service of great value, almost every one resolves itself into a successful piece of mere spying or trailing. Little ingenuity or powers of reason were required. Of course, there are a thousand tricks that an experienced man acquires as a matter of course, but which at first sight seem almost like inspiration. I shall not forget my delight when Jesse Blocher, who had been trailing Charles Foster Dodge through the South (when the latter was wanted as the chief witness against Abe Hummel on the charge of subornation of perjury of which he was finally convicted), told me how he instantly located his man, without disclosing his own identity, by unostentatiously leaving a note addressed to Dodge _in a bright-red envelope_ upon the office counter of the Hotel St. Charles in New Orleans, where he knew his quarry to be staying. A few moments later the clerk saw it, picked it up, and, as a matter of course, thrust it promptly into box No. 420, thus involuntarily hanging, as it were, a red lantern on Dodge’s door. There is no more reason to look for superiority of intelligence or mental alertness among detectives of the ordinary class than there is to expect it from clerks, stationary engineers, plumbers, or firemen. While comparisons are invidious, I should be inclined to say that the ordinary chauffeur was probably a brighter man than the average detective. This is not to be taken in derogation of the latter, but as a compliment to the former. There is more reason why he should be. There are a great many detectives of ambiguous training. I remember in a celebrated case discovering that of the more important detectives employed by a well-known private Anti-Criminal Society in New York, one had been a street vender of frankfurters (otherwise yclept “hot dogs”), and another the keeper of a bird store, which last perhaps qualified him for the pursuit and capture of human game. There is a popular fiction that lawyers are shrewd and capable, similar to the prevailing one that detectives are astute and cunning in their methods. But, as the head of one of the biggest agencies in the country remarked to me the other day, when discussing the desirability of retaining local counsel in a distant city: “By thunder! _You_ know how hard it is to find a lawyer that isn’t a _dead one_.” I feel confident that he did not mean this in the sense that there was no good lawyer except a dead lawyer. What my detective friend probably had in mind was that it was difficult to find a lawyer who brought to bear on a new problem any