228 BRITISH MARINE ALG. 
which they giow, that nothing but the parasite itself is visible to the 
unassisted eye. I have met with this species in Scotland, and on various 
parts of the southern shores of England, but most abundantly and 
beautifully fruited, in Torbay and at Plymouth. : 
I have now concluded my description of the British marine alge, in 
which I have endeavoured to fulfil the promise of my introduction to 
this work, viz., to supply any of my readers who may visit the seashore, 
with a subject to occupy their leisure, to interest them in the vegetable 
productions of the deep, and to instruct them in preserving such specimens 
as they may collect for future study. With the exception of a few very 
rare plants and some minute parasites, every species of seaweed which is 
likely to be met with on the shores of the British islands has been 
accurately figured, either from the living plant, or from photographs or 
drawings of magnified portions; so that, with these illustrations before 
them, and the help of even an ordinary lens, I make bold to say that few 
collectors will find any particular difficulty in identifying such plants 
as they may meet with during their rambles on the seashore. 
