—For several days reports have reached this country of the serious illness of Prince Frederick William, who is suffering with a serious affection of the throat. A dispatch of May 30 says that Virchow determined by a microscopical examination that the growth is not carcinomatous. Dr. Morrell Mackenzie was called to Berlin to see the Prince, and it is said that his early arrival averted a thyrotomy. He removed about two-thirds of the growth. Dr. Mackenzie will go to Germany again in a few days. His call to Germany to see the Crown Prince is a merited honor, and shows that scientific worth is not estimated by geographical boundaries.