( 132 ) 



endochrome flows out, staining the water of a bright crimson or rosy 

 hue. This colour, however, is not permanent, as tlie gi'anules them- 

 selves soon burst, the colouring matter becomes diffused thi'ough the 

 water, and ultimately disappears. Some of the tints, however, are very 

 beautiful, and were it possible to fix them, they might become valuable 

 as dyes. 



If not practicable for the use of the dyer, this is at least easily 

 effected for the herbarium by using salt water instead of fresh in spread- 

 ing out the specimens on paper, and removing all the siu-perfiuous 

 moistiu'e by means of blotting-paper, before putting them to i)ress. 



Miss Gifford has very kindly supplied us with beautiful specimens 

 ill fruit, of this fine and veiy rare species. From the preceding it may 

 at once be known by the few and very delicate byssoid ramuli, confined 

 to the upper branchlets of the frond, and to the inner edges of which the 

 tetraspores are attached. 



For the discovery of this pretty species we are indebted to Mr. Borrer, 

 whose specimens were picked up on the beach at Brighton. We are 

 not aware whether the species has ever been found growing on the 

 British shores, all the specimens we have seen having been brought 

 from Jersey, where it seems to be not unfrequent, its favourite haunts 

 being the sheltered tide-pools near or below low-water mark, where it 

 grows on the smaller Algae. 



GRIFFITHSIA BARBATA. 



EXPLANATION OF DISSECTIONS. 



Fig. 1 . — Branchlet -with tetraspores. 

 2. — Same, more magnifietl. 

 3. — Favellffi. 

 4. — Tetraspore attached to filire. All magnified. 



