562 



HEMOGLOBIN. 



[BOOK ii. 



FIG. 75. (After Preyer and Gamgee.) THE SPECTRA OF OXY-H^MOGLOBIN IN 



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

 CABBONIC-OxiDE-H&MOGLOBIN. 



1 to 4. Solution of Oxy-Haemoglobin 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 Haemoglobin. 



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

 thickness. The letters (A, a &c.) indicate Frauenhofer's lines, and the figures wave- 

 lengths expressed in 100,000th of a millimetre. 



