Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLI. No. 22. —February, 1900. 



CONTRIBUTIONS FROM THE PHYSICAL LABORATORY OF THE 

 MASSACHUSETTS INSTITUTE OF TECHNOLOGY. 



LI. — A METHOD OF DETERMINING THERMAL 

 CONDUCTIVITY. 



By F. A. Laws with F. L. Bishop and P. McJunkin. 



Investigations on Light and Heat made or published, wholly or in part, with Appropriations 

 fkom the rujiford fund. 



