BLOOD-SPECTRA COMPARED WITH SOLAR SPECTRUM, 



1. Solar spectrum. 



2. Spectrum of dilute solution of oxyhaemoglobin, 



haemoglobin. 



carbonic oxide haemoglobin. 



acid haematin in ethereal solution. 



,, alkaline haematin. 



,, methaemoglobin . 



,, haemochromogen. 



,, acid haematoporphyrin. 



[To face page 466. 



