452 



HEMOGLOBIN. 



[BOOK ii. 



FIG. 89. (After Preyer and Gamgee.) THE SPECTRA OF OXY-^JEMOGLQBJN IN 



DIFFERENT GRADES OF CONCENTRATION, OF (REDUCED) HEMOGLOBIN AND OF 

 CARBONIC-OXIDE-HJEMOGLOBIN. 



1 to 4. Solution of Oxy-Hsemoglobin containing (1) less than -01 p.c., (2) -09 p.c., 

 (3) -37 p.c., (4) -8 p.c. 



5. " (reduced) Haemoglobin containing about -2 p.c. 



6. " " carbonic-oxide-Hsemoglobin. 



In each of the six cases the layer brought before the spectroscope was 1 c.m. 

 in thickness. The letters (A, a &c.) indicate Fraunhofer's lines, and the 

 figures wave-lengths expressed in 100,000th of a millimeter. 



