. The birds of eastern North America known to occur east of the nineteenth meridian .. . c::^ ^r^ ^^^fe*^-~ -3 ■%-•--. Terns. Gulls. Group 5. Wing, over 17 inches long. lrim;ii-ies, iiiai-ked with more or less blai-k. Lams mnriiiK^. Great Black=backed Gull. Sei- Xo. 27. Lams (jJnurHs. Glaucous Gull. See No. 24. No bl:ick oil priimiries. * For <luccti()i\s for iiicasureiiniit, see page 9. FAMILY GULLS AND TERNS. 41

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1900