There is a current opinion among women, which every year causes the death of many young women, that acids, especially vinegar, are preventives of obesity. Beyond all doubts, acids have the effect of destroying obesity, but they also destroy health and freshness. Lemonade is of all acids the most harmless, but few stomachs can resist it long. The truth I wish to announce cannot be too public, and almost all of my readers can bring forward some fact to sustain it. I knew in 1776, at Dijon, a young lady of great beauty, to whom I was attached by bonds of friendship, great almost as those of love. One day when she had for some time gradually grown pale and thin (previously she had a delicious embonpoint) she told me in confidence that as her young friends had ridiculed her for being too fat, she had, to counteract the tendency, been in the habit every day of drinking a large glass of vinaigre. I shuddered at the confession, and made every attempt to avoid the danger. I informed her mother of the state of things the next day, and as she adored her daughter, she was as much alarmed as I was. The doctors were sent for, but in vain, for before the cause of her malady was suspected, it was incurable and hopeless. Thus, in consequence of having followed imprudent advice, our amiable Louise was led to the terrible condition of marasmus, and sank when scarcely eighteen years old, to sleep forever. She died casting longing looks towards a future, which to her would have no existence, and the idea that she had involuntarily attempted her own life, made her existence more prompt and painful. I have never seen any one else die; she breathed her last in my arms, as I lifted her up to enable her to see the day. Eight days after her death, her broken hearted mother wished me to visit with her the remains of her daughter, and we saw an extatic appearance which had not hitherto been visible. I was amazed, but extracted some consolation from the fact. This however is not strange, for Lavater tells of many such in his history of physiogomy. ANTIOBESIC BELT. All antiobesic tendencies should be accompanied by a precaution I had forgotten. It consists in wearing night and day, a girdle to repress the stomach, by moderately clasping it.