584 



C. A. MAC MUNN. 



them. Such a solution was greenish yellow ; it possessed a 

 fine red fluorescence; and its bands read as follows : 



1st band 

 2nd „ 

 3rd ,. 



\ 681-5 to X 650. 

 X 638-5 to X 605. 

 X 593 to X 573. 



This solution, diluted with water, was agitated with bisul- 

 phide ; the latter fell down of a yellow colour, and possessed 

 a red fluorescence, and gave a spectrum the same as sp. 11, as 

 will be seen by the following readings : 



1st band 



2nd „ 



3rd „ 



4th „ 



5tb „ 



6th „ 



7th „ 



X 685 to X 656. 



X 644 to X 612-5 (?). 



X 599 to X 577. 



? 



X 523 to X 499. 

 X 479 to X 460. 

 X 453 to X 436. 



The alcohol solution from which this solution had been 

 removed was of a yellow colour, and gave a feeble band at the 

 end of green, and one in violet ; on evaporation it left a dirty 

 yellow residue, which gave no reaction with iodine and iodide 

 of potassium, was slightly green with nitric acid, and brownish 

 with sulphuric acid. 



A third absolute alcohol extract of the tentacles only, 

 which had a green colour and a red fluorescence, gave sp. 13. The 

 only diff'erence between this and sp. 11 is in the shading of the 

 second band, as in 13 it is one single band, whereas in 11 there 

 is a distinct narrow part over the broad, less shaded one. The 

 wave length readings, too, show a close agreement; thus the 

 bands read : 



There was also a band at the blue end of green, and perhaps 

 one in violet. 



A third extract of the parts of Anthea without the 

 tentacles contained the same colouring matters. It was of a 



