DR. C. A. MAC MUNN ON ENTEROCHLOROPHYLL, AND ALLIED PIGMENTS. 263 
Explanation of Plate 9. 
CHART I. 
Sp. 1. Spectrum of a living leaf of common grass and of the other leaves mentioned 
in this paper. The fourth band is exaggerated. 
Sp. 2. A bit of Spongilla examined in the same way. 
Sp. 3. Spectrum of an Ophrydium. 
Sp. 4. Enterochlorophyll of Pcdudina vivipera in rectified spirit. 
Sp. 5. Enterochlorophyll of Limnceus stagnalis in absolute alcohol. 
Sp. 6. The same solution treated with nitric acid. 
Sp. 7. Enterochlorophyll of Trochus ziziphinus in absolute alcohol. 
Sp. 8. Enterochlorophyll of Trochus cinerarius in alcohol. 
Sp. 9. Enterochlorophyll of Littorina littorea in absolute alcohol. 
Sp. 10. Spectrum of the “ liver ” of Littorina littorea examined with an achromatic 
substage condenser and Swan lamp. 
Sp. 11. Enterochlorophjdl of Patella vulgata in absolute alcohol. 
Sp. 12. “ Bile ” of Patella vulgata showing enterohaematin. 
Sp. 13. Diluted alcohol solution of the “ liver” of Helix pomatia. 
Sp. 14. A second absolute alcohol extract of the same “liver.” 
Sp. 15. Absolute alcohol extract of the “liver” of another Helix pomatia. 
Sp. 16. Enterochlorophyll of Solaster papposa in rectified spirit. 
Sp. 17. Enterochlorophyll of Uraster rubens in alcohol. 
Sp. 18. Enterochlorophyll of another specimen of Uraster rubens in absolute alcohol, 
showing the double band in red. 
Sp. 19. The solution giving spectrum 18 was evaporated to dryness, and the residue 
extracted with petroleum-ether gave this spectrum. ( Cf Spongilla-cbloro- 
phyllA) The second band in red is a shade too broad. 
CHART II. 
Chlorophyll of Primula in absolute alcohol, deep layer. 
The same, shallow depth, showing the bands of “ chlorophyll yellow ” at F and 
before G. 
Petroleum-ether solution of the “ chlorophyll yellow ” of Primula after saponi¬ 
fying. 
The mother liquid, after separation of the ether, alcohol ether, and petro¬ 
leum-ether extracts, showing how the chlorophyll bands have been displaced 
by the saponification. 
Sp. 1. 
Sp. 2. 
Sp. 3. 
Sp. 4. 
* Some of these spectra represent the result of examining a deep and shallow layer of liquid. 
