158 Dawson, Bird Colonies of the Olymjnades. [ April 



R. Tufted Puffin, 2000. R. Baird Cormorant, 50. 



R. California Murre, 20. V. Pectoral Sandpiper, 6. 



R. Kaeding Petrel, 10000-25000. 



Erin's Bride. 



Loc. — As last; offshore 275 yards. 



Area. — About half-acre. 



Desc. — Narrow rock 125 feet high with nearly perpendicular sides and 

 unclimbable. Covered with fresh Cormorant guano. 

 R. Western Gull, 50. R. Baird Cormorant, 100. 



R. White-cre.sted Cormorant, 100. 



The Grenville Arch. 



Loc— Lat. 47° 18' 20" N.; Long. 124° 17' W.; S. W. from Point Gren- 

 ville; offshore half mile. 



Area. — About 1 acre. 



Desc. — Conical rough rock 100 feet high, .sloping on S. and W., perpen- 

 dicular on N. and E.; tunnelled through middle by large arch about 40 

 feet high. 



R. Pigeon Guillemot, 10. R. Brandt Cormorant, 100. 



R. California Murre, 10. R. Baird Cormorant. 100. 



R. Western Gull, 50. R. Black Oystercatcher, 1 pair. 



R. White-crested Cormorant, 100. 



The Grenville Pillar. 



Loc. — Just off Grenville Point. 



Area. — About quarter acre. 



Desc. — Perpendicular, undercut on N., unscalable. Earth-topped, 

 with grass. 



R. Tufted Puffin, ? R. White-crested Cormorant, 100. 



R. California Murre, 500. R. Brandt Cormorant, 100. 



R. Western Gull, 40. R. Black Oystercatcher, 1 pair. 



Split Rock. 



Loc— Lat. 47° 24' 20" N.; Long. 124° 21' 45"; offshore about one mile. 

 Area. — About 1 acre. 



Desc. — Barren double rock of metamorphic breccia, 85 feet high, very- 

 rough as to surface; north slope covered with small water-holes. 



