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Science, New Series, Vol. 5, No. 122, Apr. 30, 1897


Previous Issue: New Series, Vol. 5, No. 121, Apr. 23, 1897
Next Issue: New Series, Vol. 5, No. 123, May 7, 1897


Front Matter (1 p.)
The National Academy of Sciences, pp. 669-671
An Essay on the Classification of Insects, pp. 671-677
John B. Smith

How May Museums Best Retard the Advance of Science?, pp. 677-683
F. A. Bather

Internal Secretions Considered in Relation to Variation and Development, pp. 683-685
Albert Mathews

A Layman's Views on Specific Nomenclature, pp. 685-688
Theodore Roosevelt

Current Notes on Anthropology, pp. 688-689
D. G. Brinton

Scientific Notes and News, pp. 689-694
University and Educational News, p. 694


Discussion and Correspondence
The Re-Distribution of Type-Specimens in Museums, pp. 694-695
F. A. Bather
The Quaternary of Missouri, pp. 695-696
J. E. Todd
A `Driftless' Ridge, p. 696
O. H. Hershey


Scientific Literature
----------------, pp. 696-699
Diseases of Plants Induced by Cryptogamic Parasites
Karl Freiherr Von Tubeuf
Review author[s]: Geo. F. Atkinson
Recent Books on Quaternions, pp. 699-701
Theorie der Quaternionen
P. Molenbroek
Anwendung der Quaternionen auf die Geometrie
P. Molenbroek
The Outlines of Quaternions
H. W. L. Hime
A Primer of Quaternions
A. S. Hathaway
Utility of Quaternions in Physics
A. McAulay
Review author[s]: Alexander Macfarlane


Scientific Journals, pp. 701-702
Societies and Academies, pp. 702-704
New Books, p. 704
Errata, p. 704

Previous Issue: New Series, Vol. 5, No. 121, Apr. 23, 1897
Next Issue: New Series, Vol. 5, No. 123, May 7, 1897



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