APPENDIX. 341 



vdth its slime, this is drawn out into threads as the hub- 

 ble ascends; and now, having a buoy, and a ladder 

 whereon to climb to the surface, it waits suspended until 

 that bubble comes into contact with the weeds that float 

 around ! '*-~p. 134. 



Note 2, page 8. 



Kelp products, copied from the Inverness Courier^ 

 April 1850: — 



" Mr. Paterson of Glasgow has sent to us the following 

 samples of various products obtained by him from kelp. 

 They are described as follows in a note from that gen- 

 tleman : No. 1 sample, crude saltpetre, produced in my 

 laboratory from nitrate of soda, and from muriate of 

 potash, obtained from my own iodine works, in the con- 

 sumption of kelp. No. 2, the same produce as No. 1, 

 being a portion of the same experiment submitted to the 

 refining process. No. 3, sample of refined saltpetre, pro- 

 duced from nitrate of soda, and kelp muriate of potash, 

 manufactured on a large scale for commercial purposes, 

 by A. D. & G. Morton, Glasgow. No. 4, sample of pot- 

 ash, produced from the salts of kelp, exclusively, and 

 possessing all the properties of American potash. No. 

 5, sample of pearlash produced from the salts of kelp, 

 exclusively, and possessing all the properties of Ameri- 

 can pearlash. No. 6, sample of iodine from kelp by 

 me. No. 7, sample of hydriodate of potash, from iodine 



