32 Rev. A. jP. Kemp on the Shore Zones of 



In sandy bays, in water of from 1 to 4 fatlioms deep, the curi- 

 ous cord-plant Chorda Jilum grows abundantly, and is from 

 30 to 40 feet long. It is a hollow and chambered plant, 

 and in its young state is covered with green byssoid fibres. 

 In the same category may also be noted the beautiful Grinellea 

 Americana^ frequently found on this coast, the analogue of the 

 brilliant WormshioUia sanguinea of Europe. It is peculiarly 

 American, and grows abundantly in Long Island Sound, and 

 New York Harbour. 



Other plants might be added to these which we have noted^ 

 as inhabiting the various belts of the shore, and the deep waters 

 of the North American coasts. These only occurred to me in 

 my investigations at Peak's Island. Were however these zones 

 of distribution to be permanently maintained, in works on the 

 marine plants, they would greatly facilitate the work of collecting. 

 Further researches would increase the number of plants which 

 make their special homes in each, and would enable us to deter- 

 mine the habits of growth of those species whose special homes 

 we have succeeded in locahsing. It would farther be interesting 

 to trace the deep sea limits of the various plants on this coast, 

 after the manner of Forbes' researches in the Mediterranean. 

 Little or nothing has yet been done in this branch of plant dis- 

 tribution in this country. The difficulties attending such inves- 

 tigations, on the boisterous and rocky coast of Eastern America, 

 are very great, but it is to be hoped that some of the zealous bo- 

 tanists of America, with means and leisure at command, may turn 

 their attention to this interesting department as their special 

 study. 



To sum up our work, we present the following classification of 

 the plants noted in the several zones. 



I. The plants found in the Drift Zone are a collection of all 

 kinds. 



II. The plants in the Ulva Zone are : — 



Ulva latissima. 

 Enteromorpha intestinalis. 

 " compressa. 



" clathrata, 



" Ilopkirkii, 



Cladophora rupestris. 

 " uncialis, 



" Jlexuosa. 



