662 
DR. C. A. MAC MTJNN ON THE CHROMATOLOGT OF ACTINIAE. 
Sp. 11. The same with ammonium sulphide (hsemochromogen). 
Sp. 12. Spectrum of acid hsematoporpbyrin from a solution obtained as described, 
from Actinia mesembryanthemum. 
Sp. 13. Spectrum of alkaline hsematoporphyrin, from the same. 
Sp. 14. Biliverdin in alcohol solution from the mesoderm of Actinia mesembryan- 
themum. 
Sp. 15. The same solution with nitric acid, early stage of reaction. 
Sp. 16. Spectrum of Actiniochrome and another pigment, from tentacles of Bunodes 
crassicornis, &c. 
Sp. 17. Glycerin extract of the ectoderm of Actinia mesembryanthemum. 
Sp. 18. The same after treatment with caustic soda or caustic potash and afterwards 
ammonium sulphide (hsemochromogen). 
CHART II. Plate 69. 
Sp. 1. Yellowish-red tentacles of Bunodes crassicornis. 
Sp. 2. Red ectoderm of Bunodes crassicornis, showing the spectrum of the lnematin- 
yielding pigment. 
Sp. 3. Rectified spirit and caustic potash solution of the same. 
Sp. 4. The same ou addition of ammonium sulphide (hminochromogen). 
Sp. 5. Glycerin extract of tentacles of Bunodes crassicornis, showing spectrum 
of actiniochrome. 
Sp. 6. Solid ectoderm of Bunodes crassicornis after digestion in rectified spirit and 
caustic potash. 
Sp. 7. Glycerin extract of the tentacles of some specimens of Bunodes crassicornis, 
showing spectrum of actiniochrome and another pigment. 
Sp. 8. Spectrum of Fucus serratus in solid state. 
Sp. 9. Alcohol solution of the colouring matter of same, showing chlorofucin hands 
for comparison with those of the pigment of “yellow cells.” 
Sp. 10. Spectrum of “yellow cells,” in situ, in tentacles of Bunodes ballii. Cf. 8. 
Sp. 11. Ectoderm of Bunodes ballii, showing presence of a trace of the laematin- 
yielding pigment. 
Sp. 12. Absolute alcohol extract of tentacles of Bunodes ballii. Cf 9. 
Sp. 13. The same with nitric acid. 
Sp. 14. Absolute alcohol extract of ectoderm of Bunodes ballii. 
Sp. 15. Absolute alcohol extract of tentacles of Bunodes ballii, with caustic potash. 
Sp. 16. Rectified spirit and caustic potash extract of the ectoderm of Bunodes ballii, 
showing that the spectrum of the pigment of the “ yellow cells ” is changed 
by KHO. 
Sp. 17. Tentacles of small variety of Bunodes ballii, showing actiniochrome. 
Sp. 18. Ectoderm of the same. 
