Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLIII. No. 12. — December, 1907. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 

 HARVARD COLLEGE. 



A REVISION OF THE ATOMIC WEIGHT OF LEAD. 



PRELIMINARY PAPER.— THE ANALYSIS OF LEAD CHLORIDE. 



By Gregory Paul Baxter and John Hunt Wilson. 



LIBRARY 

 NEW YORK 



BOTANIC/. L 

 GARDEN. 



