Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIV. No. 10. — January, 1899. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY 

 OF HARVARD COLLEGE. 



THE USE OF THE TRANSITION TEMPERATURES OF 



COMPLEX SYSTEMS AS FIXED POINTS IN 



THERMO METR Y. 



Bv Theodoue William Richards and Jesse Briggs Churchill. 



