Identifier: birdsnature121902chic (find matches)
Title: Birds and nature
Year: 1900 (1900s)
Authors:
Subjects: Birds Natural history
Publisher: Chicago, Ill. : A.W. Mumford, Publisher
Contributing Library: Smithsonian Institution Libraries
Digitizing Sponsor: Biodiversity Heritage Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
or, if transparent and free from flaws,make desirable gems, the only colorsfound in sufficient quantity outside of thered to make an appreciable supply arethe blue and the black. The blue Spinelsresemble the sapphire in color, thoughthey are somewhat paler. They comechiefly from Ceylon and Burmah, wherethey occur together with the ruby Spinel.The black Spinel is known as Ceylonite,or pleonaste, and is also obtained chieflyfrom Ceylon, although occurring of qual-ity suitable for cutting at Mount Vesu-vius in Italy. Like the ruby, Spinel can be made ar-tificially, the process being to heat amixture of alumina and magrieisia withboracic acid, and if the red color is de-sired, a little chromium oxide. The Spinel ruby seems to have beenknown to the ancients equally with thecorundum ruby, and the two were prob-ably often confounded. The natives ofIndia call the Spinel the pomegranateruby and believe to this day that it pos-sesses valuable medicinal properites.Oliver Cummings Farrington. 210
Text Appearing After Image:
FROM COL. CHI. *C*D. SCIENCES. 582 WIirrK-CROWNED SPARROW. (Zonotrichia leiicophrys). Life-size. THE WHITE-CROWNED SPARROW. (ZoHolrichia leucophrys.) ii With the snowflakes oer the mountainsHasten past the hawks from Northland,Speed along the titmice, juncos,White-crowned Sparrows, wrens, and creepers,Tiny kinglets, sweet-voiced bluebirds,All in eager search for havensWhere the touch of winter kills not. —Frank Bolles, Birds in October. Mr. Ernest E. Thompson calls theWhite-crowned Sparrow an aristocrat ofthe sparrow family. One of the largestof the sparrows, its beautifully markedplumage and its dignified mien, as itstands on some exposed perch, imme-diately attracts the attention of an ob-server. Its range is extensive, coveringthe whole of the United States during itsmigrations, and in winter it passes fur-ther southward into the valley regions ofsouthward into the valley regions ofMexico. In the selection of a nestingsite a pure and cool atmosphere seems aparam.ount consideratio

Note About Images