Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLIII. No. 10. — November, 1907. 



CONTRIBUTIONS FROM THE FIRST CHEMICAL INSTITUTE OF 

 THE ROYAL FRIEDRICH-WILHELM UNIVERSITY OF BERLIN. 



THE TRANSITION TEMPERATURE OF MANGAN0U8 



CHLORIDE: A NEW FIXED POINT 



IN THERMOMETRY. 



By Theodore W. Richards and Franz Wrede. 



Investigations on Lioht and Heat made and fcblished, ■wholly or m pakt, with Appropriation 



PROM the Rumpord Fund. 



