As a habitual writer of unsolicited letters to persons I found fascinating, I quite naturally decided to write a letter to the author of a very interesting monograph which I came across in my independent readings in the library at Harvard. The work was titled: Upon the Distinction between the Ashes of the Various Tobaccos: An Enumeration of 140 Forms of Cigar, Cigarette and Pipe Tobacco, with Coloured Plates Illustrating the Difference in the Ash. Its author was listed as Mr Sherlock Holmes. The address of the publisher was in London, England, and it was to that address that I sent a brief note expressing my admiration for the author’s science. The response from Mr Holmes was astounding in that its author presumed on the basis of my very brief note to provide an amazingly accurate biographical sketch of myself.
“My studies of science,” wrote Mr Holmes, “have gone into areas that have never been fully realised, especially in the realm of deducing facts by observation. For example, I know from your letter that you have had considerable trouble with your eyes in the past, that you are an outdoorsman, your father has some wealth, that he has been very indulgent of your rebelliousness in terms of choosing a life’s work, and that at the time you wrote to me you were seated with the late afternoon sun to your back and that you were wearing a blue jacket and were penning your letter at the university library.” Anticipating my amazement, Holmes went on to explain these startling statements. “Your eye trouble is evident in the very careful penmanship which is produced by someone who has learned to write by bending very close to the paper – a habit developed at a time of troubled vision which has, I assume, been corrected, though the habit of bending over so far persists along with the careful writing. The business of being an outdoorsman I deduce from both your stated interest in natural science and the fact that your penmanship is hurried, indicating restlessness at being cooped up in a room. That your family has some wealth is obvious enough, inasmuch as you are a student at Harvard, which I know to be an institution of some distinction and some cost to its students. because you are a native New Yorker, you would have chosen a school closer to home if expenses had been a problem. I surmise that your father’s wealth comes from business interests which you do not share, given your stated interest in natural science; ergo, your father must be a very tolerant man to permit you to pursue science when he would probably prefer you to follow him in his business. That you chose not to indicates rebelliousness. As for your blue suit, a strand of fiber was adhered to the writing paper. On the location of the sun to your back and that it was a late afternoon sun, I make these deductions on the basis of a slight blotting of the paper by your hand, unnoticed because of a waning light as you wrote. That you did your penmanship in the library I deduce from the fact that the nib of your pen was quite worn–the type found in library ink stands – and that you wrote regarding my monograph on tobaccos which you had read at the library in question. All quite elementary, you see.”
It may seem superfluous to state that I could not resist continuing to correspond with a young man of such unusual and amazing talents. In my next letter to him I went on at some length in praise of his abilities, to which he responded, “The science of deduction and analysis is one which can only be acquired by long and patient study, yet, from a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other. All of life is a great chain, the nature of which is known whenever we are shown a single link of it. by a man’s fingernails, by his coat-sleeve, by his boots, by his trouser-knees, by the callosities of his forefinger and thumb, by his expression, by his shirt-cuffs – by each of these things a man’s calling is plainly revealed. That all united should fail to enlighten the competent inquirer in any case is almost inconceivable. To illustrate some of this, I am taking the liberty of sending you further writings on the study of footprints and the dating of documents. If you are interested, I have other writings which I would be happy to send to you. In your latest letter you seem to have implied that my deductions in your case were little more than a clever trick, but I assure you, Mr Roosevelt, that I am in earnest. In fact, I am beginning to earn my living with these skills as a consulting detective. I believe I am the only one in the world.”
Thus began a regular exchange of letters between myself at Harvard and Mr Holmes, who was residing in lodgings on Montague Street in London. The letters revealed a remarkable mind
