86 BRITISH CHAEOPHYTA. 



distinct type of vegetation, and not, as some authors 

 suppose, merely a subordinate group of Algse. 



Had not the untimely death of my valued friend 

 Clement Reid interrupted our joint work in this field, 

 it would have been possible to give a more complete 

 accoimt of the fossil remains in the British deposits. 

 I am very much indebted to Mr. W. N. Edwards, of the 

 British Museum, for the gxeat assistance he has rendered 

 me in connexion with this chapter, and at all times 

 with fossil Chara work. My grateful thanks are due to 

 Dr. Kidston and Prof. Lang for permission to reproduce 

 some of the illustrations in their memoir on the Rhynie 

 Chert, to Dr. Bell for a like permission in respect to his 

 figures of Palseochara, to Miss M. E. J. Chandler, Mr. 

 G. W. Colenutt, Dr. Morley Davies, MM. DoUfus and 

 Fritel, Dr. Kitchin, Dr. Kidston, Prof. Lang, Mr. R. B. 

 Newton, Dr. ,T. Pia, Mrs. E. M. Reid, Dr. Scott, Prof. 

 Seward, Mr. C. D. Sherborn, Dr. Marie Stopes, Mr. 

 Hamshaw Thomas, Dr. G. R. Wieland, and other friends 

 and correspondents who have kindly helped me from 

 time to time with specimens and information. I have 

 to thank Miss Maud Neal for kindly copying the text- 

 figures. 



Table showing Range in Time of the Chabophyta. 



PALiEOZOIC. 



CAEBONIFEROUS. 

 Coal Measures : 



Palseochara acadica. Bell. 



MESOZOIC. 



JURASSIC. 

 Oolitic. 



Lower Oolites — Bajocian : 



Charx (sens, latiss.) spp. (indet.). 

 Lower Oolites — Bathonian (Forest Marble) : 



Chara Isevigata, Upton, and C. spp. (indet.). 

 Middle Oolites— Oxfordian : 



C. Bleicheri, Sap. 

 Upper Oolites — Purbeckian : 



C. Jaccardi, Heer, 0. Maillardi, Sap., C. spp. (plur. indet.), 

 Clavator Heidii, J. Groves. 



