



Price, One Dollar, Net. 





ABSOLUTE ATOMIC WEIGHTS 



CHEMICAL ELEMENTS 



CHEMISTS OF THE NINETEENTH CENTURY 





UNITY OF MATTER; 



GENERAL SCIENTIFIC PUBLIC, 



GUSTAVUS DETLEF HINRICHS, M.D., LL.D,, 



PORTRAIT OF BERZELIUS AND THREE PLATES. 



CARL GUSTAV HINRTC1! 



