514 



THE MICROSCOPE. 



species of the Flmtrce the interior of the cell is protected 

 by a lid which bears some appearance to the head and 

 beak of a bird, and hence it is termed the birds-head 

 process. This has been made the subject of investigation 

 by many naturalists. George Busk, Esq., F.R.S., 1 con- 

 tributed to the Transactions of the Microscopical Society, 

 1849, an admirable paper on the Notamia bursaria, 

 "Shepherd's-purse Coralline," (represented in fig. 244, 

 Nos. 1 and 3), which adds to our knowledge of thia 

 curious process. He says : " This most beautiful pearl- 



Fig. 244. 



1, Notamia lunaria, Shepherd' s-purte Coralline. 2, Anguinaria spatutota, 

 Snake Coralline, growing with the Campanularia Integra. 3, The Shepherd'* 

 purse Animalcule withdrawn iuto its cup, and the internal organism 

 shown greatly magnified. 



coloured coralline adheres by small tubes to fuci, from 

 whence it changes into flat cells; each single cell, like 



(1) Mr. Busk has added to the description here given of this b!rd'*-he4 

 process in the Quarterly Journal of Microicopical Science, for January 135*. 



