A general officer, himself a six-footer, told me, lately, that they had found the tall men of very little use in the field, from their inability to endure the fatigues of a campaign. When armies shall march on railroads, and manoeuvre by steam, the grenadiers will come in play again; but as it is, the French are admirably adapted by their _physique_ to return the career that history has given them. The Romans resembled them in this respect, Cicero admitting that many people excelled them in size, strength, beauty, and even learning, though he claimed a superiority for his countrymen, on the score of love of country and reverence for the gods. The French are certainly patriotic enough, though their reverence for the gods may possibly be questioned. The regiments of the guards, the heavy cavalry, and the artillery are all filled with men chosen with some care. These troops would, I think, form about an average American army, on the score of size. The battalions of the line receive the rest. As much attention is bestowed in adapting the duty to the _physique_, and entire corps are composed of men of as nearly as possible the same physical force, some of the regiments certainly make but an indifferent figure, as to dimensions, while others appear particularly well. Still, if not overworked, I should think these short men would do good service. I think I have seen one or two regiments, in which the average height has not exceeded five feet three inches. The chances of not being hit in such a corps are worth something, for the proportion, compared to the chances in a corps of six-footers, is as sixty-three to seventy-two, or is one-eighth in favour of the Lilliputians. I believe the rule for retreating is when one-third of the men are _hors de combat_. Now, supposing a regiment of three thousand grenadiers were obliged to retire with a loss of one thousand men, the little fellows, under the same fire, should have, at the same time, two thousand one hundred and thirty-seven sound men left, and of course, unless bullied out of it, they ought to gain the day. LETTER XV. Perversion of Institutions.--The French Academy.--Laplace.--Astronomy. --Theatres of Paris.--Immoral Plot.--Artificial Feelings.--French Tragedy.--Literary Mania.--The American Press.--American Newspapers.--French Journals--Publishing Manoeuvres.--Madame Malibran. To JAMES E. DE KAY, ESQUIRE.