94 The Ottawa Naturalist. [Aug. 



of the Trenton rocks to the Chazy and Utica formations, as 

 observed at Blueberry Point and Billing's Bridge, was pointed 

 out by Mr. Wilson. 



Mr. Groh, after calling attention to the abundance of 

 Rosaceous plants in the locality, illustrated the fact by means 

 of specimens collected, as follows: The two wild strawberries 

 {Fragaria virginiatia and F. vesca). Barren Strav/berry, Dwarf 

 Raspberry, Wild Red Raspberry, Purple Flowering Raspberry, 

 Bird Cherry, Choke-cherry, Wild Plum, Juneberries, two species 

 (Amelanchier canadensis and .4. spicata), and Wild Rose (Rosa 

 blanda.) The Wild Plum and Dwarf Raspberry were particularly 

 noticeable. T.A.B. 



Hog's Back. The excursion to Hog's Back on the afternoon 

 of June 18th was favored with excellent weather, .but was rather 

 poorly attended, owing to heavy rains which had fallen earlier in 

 the day and threatened to spoil the afternoon. The party as- 

 sembled at the Experimental Farm and proceeded across the 

 Arboretum and along the Rideau Canal to the interesting localitv 

 named, the leaders being Messrs. Kingston, Wilson and Groh. 

 Messrs. J. W. and A .Eastham, of the Wellington Field-Natural- 

 ists' Club, of Guelph, were welcome visitors with us. 



The geological features of the place are very striking, and 

 particular notice was taken of the nature of the rock formations, 

 which are limestone and Chazy shale, and of the unusual amount 

 of dipping and folding of the rock strata. Mr. Wilson stated that 

 the anticlinal fold, or "Reg's back," which gives the locality its 

 name, and which occupies a prominent position in the middle 

 of the rapids, is one of the finest examples of its kind to be found 

 anywhere. 



The botanists of the party found no lack of interesting 

 material for their attention. All along the canal and at the 

 Hog's Back the hawthorn flora is comparatively rich, bo':h in 

 numbers of individuals and in species, and the afternoon's 

 collecting in this genus resulted in the securing of six species as 

 follows: CraicBgus submollis, C. Jackii, C. Grayana, C. flahellata, 

 C. niacracantha and C. pediccllata. Some curious fungous and 

 insect injuries of plants also attracted attention. 



H. G. 



NOTES. 



The Imperial Moth, Basilona imperialis Drury. Cap- 

 tures of this large handsome insect in Canada are always interest- 

 ing. During June and July of the present year no less than 



