322 BRITISH SEA- WEEDS. \Chlorospermece. 



is stewed, and eaten with oil and lemon-juice/' Professor 

 Harvey, in 'Pliycologia Britannica/ says: "After many 

 hours^ boiling, the frond is reduced to a somewhat sHmy 

 pulp, of a dark bro\Yn colour, which is eaten with pepper 

 and lemon-juice or vinegar, and has an agreeable flavour to 

 those who have conquered the repugnance to taste it, which 

 its great ugliness induces, and many persons are very fond 

 of it. It might become a valuable article of diet, in the 

 absence of other vegetables, to the crews of our whaling 

 vessels sailing in high latitudes, where every marine rock 

 at half- tide abundantly produces it. In its prepared state 

 it may be preserved for an iu definite time in closed tin 

 vessels." AYe regard this as a valuable hint. 



2. PORPHYRA VULGARIS, Afjardli. 



Hab. On rocks and stones, between tide-marks. Com- 

 mon. 



Except that the frond is undivided, this species does not 

 seem to ditl'er from P. laciniata. It is more elegant in 

 form, and sometimes the colour is livelier. It approaches 

 in shape the frond of Laminaria j^^yUiHs. It is from one 

 to two feet in length, and from two lines to two or three 

 inches in breadth. Professor Harvey, who expressed doubts 

 in the Manual of the distinctness of P. linearis as a species. 



