456 Canadian Record of Science. 



Pinus strobus, L. (White Pine.) 



A rare tree at Cacouna. Only one or two trees were 

 found at the foot of Pilot Hill. 



Pinus banksiana, Lambert. (Northern Scrub Pine.) 

 This interesting tree is found only on Cacouna Island, 

 where it extends in abundance from base to summit. 

 3°-12° high. Fruit. 



Pinus resinosa, Ait. (Eed Pine.) 



Common on Pilot Hill. Not observed elsewhere. Fruit. 

 Pioea nigra, Link. (Black Spruce.) 



Found with the next on the mainland and Island. They 

 both mature at about the same height. Fruit. 



Picea alba, Link. (White Spruce.) 



Common on all the hills and rocky ridges, constituting, 

 with the preceding, the principal arborescent vege- 

 tation. Also abundant on the Island. Matures at 

 6°-20°. Fruit, 



Abies bal samba, Miller. (Balsam Spruce.) 



Occasionally found on rocky ridges with Picea, more 

 abundantly on the Island. Apparently not very 

 common. Frnit. 



Larix Americana, Michx. (Larch. Tamarac. Hackma- 

 tack.) 

 Found very sparingly in low gronnd near Pilot Hill. 

 Apparently not common here, and all young trees. 

 Fruit. 



Thuya occidentalis, L. (Arbor vitse. White Cedar.) 

 Sparingly distributed among the spruce growth on the 

 mainland and Island. Everywhere small. Fruit. 



Juniperus communis, L. (Juniper.) 



Common on rocky slopes and ridges of both the Island 

 and mainland. On the former it extends to the 

 summit. 



