Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXVII. No. 7. — August, 1901. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 

 HARVARD COLLEGE. 



THE STANDARD OF ATOMIC WEIGHTS. 



By Theodore William Richards. 



MARINE BIOLOGICAL LABORATORY. 



Received ■fi^riU^..../.'^.^j2.., 



Accession No. /.S^.dy. 



Given by ^'^^y\^.<.C^<.^2^:,,,t.-<.:^^-C^y^^ 



Place, 



y>i4^.. 



***Ho book Of pamphlet is to be removed from the Iiab- 

 oratory without the permission of the Trustees. 



