350 THU CANADIAN NATtTRALTST. [Sept. 



abundant as F. serrafus is in Europe. I have also examined 

 several localities on the northern shores of Nova Scotia and in 

 the harbour of HaUfax, and have not seen a fragment of F. 

 serratus, nor have I ever found it in the collections of amateurs. 

 It was on the western shore of the harbour of Pictou, north of 

 the town, that I first met with this plamt. It was cast ashore 

 along with other sea-weeds. I however found it nowhere growing 

 there. F. nodosus and F. vesiculosus were abundant in situ, but 

 not this one. I searched carefully for it at low water, and only 

 found at last a few fronds of it growing on a flat stone about a 

 foot and a half in length and six inches in breadth, and lying 

 loose on other stones, on the shore about a mile to the south of 

 the town. From the quantity that lay on the shores, it was 

 obvious that it grew abundantly in the harbour, but in deep 

 water. This is not its usual habit. Along with allied species it 

 generally occupies the space between tide marks. From these 

 circumstances I have been led to think that F. serratus is not 

 indigenous to this continent, and has been introduced from 

 Europe. Probably it has been brought in the ballast of British 

 ships, which used at a former time to be discharged in to the deeper 

 parts of the harbour. This will also account for its deep-sea 

 habitat. The fronds which I found growing were, as I have noted, 

 on a flat stone that might easily have been washed ashore by 

 the force of the waves, floated, as it would be to some extent, by 

 the luxuriant vegetation which covered it. I have every reason 

 to believe that this is the first authenticated instance of the 

 existence of this plant on the eastern coast of America ; and is 

 probably the first instance in modern times of a naturalised 

 European alga. 



Labrador Plants.— The Kev. S. K. Butler, who has re- 

 cently returned from a residence extending over several years in 

 Labrador, has been good enough to give me a list of all the plants 

 collected by him when there, from which I have compiled the 

 following catalogue. Mr. Butler explains his localities thus : — 

 '' The two places I have most thoroughly examined are Caribou 

 *' Island and Forteau Bay. When a plant is marked < Caribou,' 

 " it is meant that I found it only at that place ; when ' Forteau ' 

 " is mentioned, the plant may occur all round Forteau Bay, 

 *' while 'Amour' means that I have found it only in 'L'ance 

 '' Amour,' and that it is not likely to occur elsewhere in the Bay; 



