VEGETATION OF SEA-WEEDS. 21.. 



observations were made at the request of his friend Dr. 

 Neill, to whom specimens of the sea-weeds were transmitted. 

 The Carr Rock is at the entrance of the Trith. It is about 

 twenty feet broad and sixty feet long, and it is uncovered 

 only at the lowest ebb of spring tide. When the operations 

 were begun, it was clothed with large sea-weeds, especially 

 with the Great Tangle, Laminarla dlgitata, and Alaria escu- 

 tenia J or Badderlocks. In the course of 1813 the workmen 

 succeeded in clearing and levelling a considerable portion 

 of the foundation of the intended building, but in the 

 beginning of IN^ovember operations were necessarily aban- 

 doned for the winter. At this time the rocks by pick and 

 axe had been made quite bare ; the sea-weeds had been cut 

 away, the roots trampled, and much of the rocks had been 

 chiselled, so that the very stumps had been cleared away. 

 On returning to the rock in May 1814 to resume opera- 

 tions, it was matter of no small surprise to find the rock as 

 completely covered with large sea-weeds as when they first 

 landed on it, though little more than six months had elapsed 

 since they left it quite bare. In particular, it was observed 

 that many recently produced specimens of Alaria esculenta 

 (Badderlocks) measured six feet in length, which is above 

 itsav erage length at full size, and they were furnished with 



