Science, New Series, Vol. 9, No. 235, Jun. 30, 1899

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Next Issue: New Series, Vol. 10, No. 236, Jul. 7, 1899

Front Matter (2 pp.)
Lord Kelvin's Address on the Age of the Earth as an Abode Fitted for Life, pp. 889-901

T. C. Chamberlin

Perspective Illusions from the Use of Myopic Glasses, pp. 901-905

Robert MacDougall

Birds as Weed Destroyers, pp. 905-906

Sylvester D. Judd

The Biology of the Great Lakes, pp. 906-907

Jacob Reighard

The International Catalogue of Scientific Literature, pp. 907-909

Scientific Books

----------------, pp. 909-910

Talks to Teachers on Psychology, and to Students on Some of Life's Ideals

William James

Review author[s]: Charles DeGarmo

----------------, pp. 910-911

Wetterprognosen und Wetterberichte des XV. und XVI. Jahrhunderts. No. 12, Neudrucke von Schriften und Karten über Meteorologie und Erdmagnetismus herausgegeben

G. Hellmann

Review author[s]: A. L. Rotch

Scientific Journals and Articles, pp. 911-912
Societies and Academies, pp. 912-914
Professor Dewar on Liquid Hydrogen, pp. 914-915
Automatic Ship-Propulsion, pp. 915-916

R. H. T.

Remeasurement of the Arc of Peru, p. 916
Leland Stanford Jr. University, p. 916
Scientific Notes and News, pp. 917-919
University and Educational News, pp. 919-920

Previous Issue: New Series, Vol. 9, No. 234, Jun. 23, 1899
Next Issue: New Series, Vol. 10, No. 236, Jul. 7, 1899