22 



The cliroriiatopliores are numerous, siiiall, oval or round, 

 flattened "bodies of rosy pink color l;/ing in the ;;;ranular 

 cytoplasm next the cell wall. They vary considerahlj'- in 

 size; on an average, each is about 3.5^ long, 2.5 f^ broad, 

 and 1,2 (^ tliick. Usually the outline of the chromatophere 

 is smooth (fig. 11), hut occasionally it is toothed, as is 

 true in other species of Grif fithsia (BERTHOLD, '86) . In 

 the ;'"ounger cells the chromatophores are crov/ded together 

 without definite arrangement. In the older cells they of- 

 ten occin' in curved rows, which are arranged in the form of 

 an irregular network (fig. 34), as was described for other 

 species of Grif fithsia by BERTHOLD (*06), and for ina,ny gen- 

 era of the Siphonocladiaceae by SCHOTZ ('79). 



In ifiaterial preserved in formalin, the distribution 

 of the coloring xn^.tter in the cliroma-tophore is similar to 

 that described by PRIESTLIT/ and IRVING (»07) in the chroaa- 

 tophores of r:'ela ginella and Chlorophy t iim . The central por- 

 tion of the chromatophore is colorless; the coloring matter 

 occurs in a peripheral layer. V/hen transferred from a 5^ 

 solution of formalin in sea water to distilled water, some 

 of the chromatophores were seen to have split ini.o two 

 halves (fig. 35), as was shovm by HAEGELI to occur when 

 certain chloroplasts were subjected to solutions of less 



