L.Schrauer, who has removed his establishment to 50 Chatham Street, New York, has just issued a new catalogue in which his stands are described and figured. They adhere more or less to the Continental model, and aim at thorough excellence in working qualities, without great display. They are essentially laboratory instruments, and among the best of their kind. They are furnished with Hartnack objectives. Besides the manufacture of stands, Mr. Schrauer gives special attention to repairing microscopes and other scientific instruments. He also makes the common accessories, including the binocular attachment.