Being arrived at _le quartier Latin_, we amused ourselves by speculating upon the propensity manifested by very young men, who were still subjected to restraint, for the overthrow and destruction of everything that denotes authority or threatens discipline. Thus the walls in this neighbourhood abounded with inscriptions to that effect; "_A bas Philippe!_"--"_Les Pairs sont des assassins!_"--"_Vive la République!_" and the like. Pears of every size and form, with scratches signifying eyes, nose, and mouth, were to be seen in all directions: which being interpreted, denotes the contempt of the juvenile students for the reigning monarch. A more troublesome evidence of this distaste for authority was displayed a few days ago by four or five hundred of these disorderly young men, who assembling themselves together, followed with hootings and shoutings M. Royer Collard, a professor lately appointed by the government to the medical school, from the college to his home in the Rue de Provence. Upon all such occasions, this government, or any other, would do well to follow the hint given them by an admirable manoeuvre of General Lobau's, the commander-in-chief of the National Guard. I believe the anecdote is very generally known; but, in the hope that you may not have heard it, I will indulge myself by telling you the story, which amused me infinitely; and it is better that I should run the risk of your hearing it twice, than of your not hearing it at all. A party of _les jeunes gens de Paris_, who were exerting themselves to get up a little republican _émeute_, had assembled in considerable numbers in the Place Vendôme. The drums beat--the commandant was summoned and appeared. The young malcontents closed their ranks, handled their pocket-knives and walking-sticks, and prepared to stand firm. The general was seen to dismiss an aide-de-camp, and a few anxious moments followed, when something looking fearfully like a military engine appeared advancing from the Rue de la Paix. Was it cannon?... A crowd of high-capped engineers surrounded it, as with military order and address it wheeled about and approached the spot where the rioters had formed their thickest phalanx. The word of command was given, and in an instant the whole host were drenched to their skins with water. Many who saw this memorable rout, in which the laughing _pompiers_ followed with their leather pipes the scampering heroes, declare that no military manoeuvre ever produced so rapid an evacuation of troops. There is something in the tone and temper of this proceeding of the National Guard which appears to me strikingly indicative of the easy, quiet, contemptuous spirit in which these powerful guardians of the existing government contemplate its republican enemies.