THE 



POPULAR SCIENCE NEWS 



AND 



BOSTON JOURNAL OF CHEMISTRY. 



DEVOTED TO 



SCIENCE OF HOME-LIFE, THE ARTS, AGRICULTURE, 



AND MEDICINE. 



EDITORS: 



AUSTIN P. NICHOLS, S. B. W. J. ROLFE, Litt.D. 



VOLUME XXIII. 



January- December, 1889. 



BOSTON: 



THE POPULAR SCIENCE NEWS COMPANY, 



