1910] The Ottawa Naturalist. 77 



Speaking of the geological leatures of the district, Mr. 

 "Wilson said that only a few outcrops of rock were to be seen. 

 These exposures were Chazy shale, and this formation is known 

 to underlie the banks of the Ottawa on both sides of the river 

 for a considerable distance. No fossils were found. He pointed 

 out the relation of the Chazy beds to the Trenton and Utica 

 formations as seen on the former excursions to Rockcliife and 

 Billing's Bridge. 



Mr. J. W. Gibson, with specimens in hand, called attention 

 to the fact that three species of pine were growing together 

 naturally in the vicinity, as nowhere else around Ottawa. These 

 w^ere the White, Red, and Jack or Banksian pines, the differences 

 between which he pointed out. The latter occurs only here, and 

 the second in but one or two other places near Ottawa. 



The writer showed specimens of three Amelanchiers or 

 Juneberries, all in blossom. The species canadensis, and its 

 variety Botryapiiim, which differs in being pubescent, were 

 advanced in bloom, while the other species, spicaia, was more 

 recently open. He also spoke of a fine example of "witches' 

 broom" which had been found on a balsam nearby, and ex- 

 plained that it was due to a fungus of the Exoascus group, which 

 lives from year to year within the wood. 



Some specimens of Antennaria canadensis, which had been 

 deformed into rosettes of leaves lying close upon the ground, by 

 the attacks of a Cecidomyid insect, were discovered by Miss 

 Matthews; and the larvae causing the injury, have since been 

 identified by Dr. Felt, of Albany, N.Y., as probably those of 

 Rhopalomyia antennarice. 



Others called upon were Mr. Brown, who briefly referred to 

 some of the plants collected, and Mr. Kingston, who gave a list 

 of the birds met with, and made some interesting observations 

 on the habits of some of the species. Owing to a rather strong 

 wind, not so many birds were seen as otherwise might have been, 

 but the following were observed: Phoebe, Bronze Grackle, Red- 

 winged Blackbird, Meadow Lark, White-throated Sparrow, Song 

 Sparrow, Chipping Sparrow, Purple Finch, Ruby-crowned King- 

 let (in full song), and Catbird. 



H. G. 



McKay's Lake. The excursion to McKay's Lake was held 

 on Saturday, May 2Sth. The weather was delightful, and in 

 spite of the fact that very few were able to be present, the after- 

 noon proved to be an exceptionally profitable one. In the 

 absencefof the^ President, Mr. Kingston was in charge of the 

 party, which[assembled at the Bridge at 3 p.m. Two delightful 



