It is a remarkable fact in natural history that one's elbow is sure to be jogged. It does not matter what you do; suppose you paint in the most secluded spot, and insert yourself, moreover, in the most inconspicuous part of that spot, some vacant physiognomy is certain to intrude, glaring at you with glassy eye. Suppose you do nothing (like myself), no matter where you do it some inane humanity obtrudes itself. I took out my note-book once in a great open space at the Tower of London, a sort of court or place of arms, quite open and a gunshot across; there was no one in sight, and if there had been half a regiment they could have passed (and would have passed) without interference. I had scarcely written three lines when the pencil flew up the page, some hulking lout having brushed against me. He could not find room for himself. A hundred yards of width was not room enough for him to go by. He meant no harm; it did not occur to him that he could be otherwise than welcome. He was the sort of man who calmly sleeps on your shoulder in a train, and merely replaces his head if you wake him twenty times. The very same thing has happened to me in the parks, and in country fields; particularly it happens at the British Museum and the picture galleries, there is room sufficient in all conscience; but if you try to make a note or a rough memorandum sketch you get a jog. There is a jogger everywhere, just as there is a buzzing fly everywhere in summer. The jogger travels, too. One day, while studying in the Louvre, I am certain three or four hundred French people went by me, mostly provincials I fancy, country-folks, in short, from their dress, which was not Parisian, and their accent, which was not of the Boulevards. Of all these not one interfered with me; they did not approach within four or five feet. How grateful I felt towards them! One man and his sweetheart, a fine southern girl with dark eyes and sun-browned cheeks, sat down near me on one of the scanty seats provided. The man put his umbrella and his hat on the seat beside him. What could be more natural? No one else was there, and there was room for three more couples. Instantly an official--an authority!--stepped hastily forward from the shadow of some sculpture (beasts of prey abide in darkness), snatched up the umbrella and hat, and rudely dashed them on the floor. In a flow of speech he explained that nothing must be placed on the seats. The man, who had his handkerchief in his hand, quietly dropped it into his hat on the floor, and replied nothing. This was an official "jogger." I felt indignant to see and hear people treated in this rough manner; but the provincial was used to the jogger system and heeded it not. My own jogger was coming. Three to four hundred country-folk had gone by gently and in a gentlemanly way. Then came an English gentleman, middle-aged, florid, not much tinctured with art or letters, but garnished with huge gold watchchain and with wealth as it were bulging