X 



INTRODUCTION. 



researches, he will feel himself amply rewarded 

 for his trouble : and the author further hopes 

 that the fortunate discovery of a plant hitherto 

 unknown and undescribed, will stimulate him 

 to the acquisition of information of a higher 

 and more scientific character, and progres- 

 sively lead him to the perfect study of this 

 exceedingly beautiful order of Cryptogamia — 

 flowerless plants * In this pursuit he will be 

 greatly assisted by the perusal of Dr. Harvey's 

 excellent work, the ' Manual of British Marine 

 Algse/t of which a second edition, with illustra- 

 tions, has lately been published. 



* The author is the fortunate discoverer of that exceed- 

 ingly rare plant, Stenogramme interrupta, thus noticed by 

 Dr. Harvey : — 



" This very interesting plant, by far the most important 

 addition which has been made to the British Marine Flora, 

 since the commencement of the present work, was disco- 

 vered on the 21st October, 1847, by Dr. John Cocks, of 

 Plymouth, among rejectamenta on the shore of Bovisand," 

 &c, &c. — Phycologia Britannica, vol. ii. 



f The author here begs to acknowledge that, in the 

 course of this little work, he has taken the liberty of making 

 many extracts, both from Dr. Harvey's 6 Manual,' and from 

 the ' Phycologia Britannica.' 



