The physicians of this country have been occupied this winter in discussing the discovery, by one of their number, of the active infectant in fever and ague. It has been found in the dust-like spores of a marsh plant, the Pamella. In Paris, at the same time, a woman of rank claims to have discovered the cause of cholera, in a microscopic insect, developed in low and filthy localities. Her details were so minute, that the Academy of Science, which began by laughing at the introduction of the matter, has been compelled to listen; and the subject is now under investigation. THE PULPIT. A very interesting account has lately been published of Amélie von Braum, an educated Swedish lady, the daughter of an army officer. She began to preach in 1843, at Carlshamm, where she lived, in the lowest dens of vice and misery. She carried with her a clean cloth and lighted candles, which give a festive impulse to the Swedish mind; and her serious words produced an extraordinary effect. In 1856 she removed to Stockholm, and was earnestly entreated to go to Dalecadin, and instruct the people. From that time, she has acted as an itinerant evangelist, preaching in summer in the open air. People listen to her for hours in rapt attention. In Sweden, there is also Mamsell Berg,[49] a brave young woman, who thought herself moved by the Holy Spirit to teach the young Laps. She could not get away from the thought that she ought to do it. A clergyman, to whom she spoke upon the matter, counselled her wisely: "Endeavor to shake off the feeling; if you cannot, then accept it as a vocation from God, and try it for six months." She said, "If I go, it shall not be for six months, but for three years." She went; and the three years became seven. She seems also to have been a noble and beautiful creature. She gathered the children around her, under the most difficult circumstances, expending her little property in putting up a schoolhouse for them, and laying in sacks of potatoes, that she might feed the half-famishing; learning herself the Laplandish language, teaching them the Swedish, and discoursing to them about the love of God.