. The Canadian field-naturalist. 1963 Notes 61 species, with up to forty individuals counted at one time. The Sooty Shearwater, Puffinus gris- eus (Gmelin), is not so plentiful as the Greater and does not come as close to the ship. Wilson's Petrel, Ocemiites oceanicus oceajiicus (Kuhl), was observed each day. About twenty individuals were the most seen at any time. The Leach's Petrel, Oceanodrojua leu- corhoa leucorhoa (Vieillot), was not seen very often. On several days none were observed. Jaegers, Stercorarius, do not appear to be plentiful on the Banks at this time of year. Two Parasitic Ja
. The Canadian field-naturalist. 1963 Notes 61 species, with up to forty individuals counted at one time. The Sooty Shearwater, Puffinus gris- eus (Gmelin), is not so plentiful as the Greater and does not come as close to the ship. Wilson's Petrel, Ocemiites oceanicus oceajiicus (Kuhl), was observed each day. About twenty individuals were the most seen at any time. The Leach's Petrel, Oceanodrojua leu- corhoa leucorhoa (Vieillot), was not seen very often. On several days none were observed. Jaegers, Stercorarius, do not appear to be plentiful on the Banks at this time of year. Two Parasitic Jaegers, 5. parasi- ticus were the most seen in one day. One Pomarine Jaeger, S. pomarinus, was col- lected. Kittiwake, Kissa tridactyla tridactyla (Linnaeus), are uncommon on the Banks at this time of year — only two birds were seen. I did not observe any other species of Gulls on the Banks, although a member of the crew mentioned seeing two one morning. Gannets, Morus bassanus (Linnaeus) were rarely observed, three birds being the most seen in one day, and on a number of days none were observed. Stanley W. Gorham National Museum of Canada Ottawa, Ontario 7 March 1962 An Unusual Leaf Inversion in Amabilis Fir The needles of amabilis fir, Abies avm- bilis (Dougl.) Forbes, a common tree of the western slopes of the British Colum- bia coast range, are flat, about ll inches long, deep blue-green and stoma-free on their upper surfaces, and silvery with two broad stoma-filled stripes on their lower surfaces. In May 1961 on Holly- bum ridge, near Vancouver, at an eleva- tion of 3600 feet, an individual amabilis fir was found on which the needles of the 1961 growth region were the inverse of the needles of the 1960 growth region. The anomaly was such as to create an appearance along the shoots, of alter- nating silver and dark green regions. Furthermore, the anomaly must have been inherent, for evidences of the annual inversion were found in nearly all shoots, and over several growth
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