82 
IOWA ACADEMY OF SCIENCE Voi.. XXVIII, 1921 
(8) Hyde, Cady & Forsythe, Phy. Rev., 10, 395, 1917. 
(9) Hyde, Gen. Elect. Rev., 20, 819, 1917. 
(10) Pyrometry, table on 337. 
(11) Forsythe, Astrophy. Jour.,. 34, 353, 1911. 
(12) Mendenhall & Forsythe, Phy. Rev., 4, 162, 1914. 
(13) Pyrometry, 313. 
(14) Pyrometry, '367-379. 
(15) Coblentz, Sci. Pap. Bu. Stand. No. 406, Dec. 1920. 
(16) Worthing, Astrophy. Jour., 36, 345, 1912. 
“Pyrometry” is a volume containing “The Papers and Discussion of 
a Symposium on Pyrometry Held by the American Institute of Mining 
and Metallurgical Engineers at its Chicago Meeting, September, 1919, in 
co-operation with the National Research Council and the National Bureau 
of Standards.” This 700-page book contains a wealth of information re- 
garding temperature measurement. 
Physical Laboratory 
The State University. 
