The list of recent deaths among men known in connection with science and its applications includes the names of Prof. Karl Müller, botanist, one of the founders of the German scientific weekly, _Die Natur_, February 9th, aged eighty-one years; Sir John Struthers, emeritus professor of anatomy in the University of Aberdeen, in his sixty-seventh year; John Kreusi, mechanical engineer and inventor, at Schenectady, N. Y., January 22d, aged fifty-six years; Thomas Cook, teacher of anatomy and author of works on the subject, in London, February 8th; Dr. A. Veitmeyer, civil engineer, in Berlin; Dr. Carl Schoenlein, of the Zoölogical Station at Naples, aged forty years; Major-General Joseph J. Reynolds, of the United States Army, formerly professor of mechanics and engineering at Washington University, St. Louis, February 26th, aged seventy-seven years; Dr. Alexandre Laboulbène, professor of the history of medicine in the University of Paris, and author of a treatise on pathological anatomy and a book on French entomological fauna, aged seventy-three years; Dr. Philipp J. J. Valentini, Americanist and student of ancient Mexican and Central American monuments and codices, in New York, March 16th, in his seventy-first year; Gustave Wiedmann, professor of physics and chemistry in the University of Leipsic, and writer on electricity and magnetism; and Major J. Evans, professor of pathology in the Calcutta Medical College, March 13th. Transcriber's Notes: Words surrounded by _ are italicized. Words surrounded by = are bold. Obvious printer's errors have been repaired, other inconsistent spellings have been kept, including inconsistent use of hyphen (e.g. "air ship" and "air-ship"), diacritical marks (e.g. "êtat" and "état"), and proper names (e.g. "Dostoievski" and "Dostoiewski"). Captions added to captionless illustrations. Some illustrations were relocated to correspond to their references in the text. End of the Project Gutenberg EBook of Appletons' Popular Science Monthly, May 1899, by Various