August 4th.—I had no idea that the sun could be powerful in Washington; even in India the heat is not much more oppressive than it was here to-day. There is this extenuating circumstance, however, that after some hours of such very high temperature, thunder-storms and tornadoes cool the air. I received a message from General McClellan, that he was about to ride along the lines of the army across the river, and would be happy if I accompanied him; but as I had many letters to write for the next mail, I was unwillingly obliged to abandon the chance of seeing the army under such favourable circumstances. There are daily arrivals at Washington of military adventurers from all parts of the world, some of them with many extraordinary certificates and qualifications; but, as Mr. Seward says, “It is best to detain them with the hope of employment on the Northern side, lest some really good man should get among the rebels.” Garibaldians, Hungarians, Poles, officers of Turkish and other contingents, the executory devises and remainders of European revolutions and wars, surround the State department, and infest unsuspecting politicians with illegible testimonials in unknown tongues.
