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Science, Vol. 3, No. 69, May 30, 1884


Previous Issue: Vol. 3, No. 68, May 23, 1884
Next Issue: Vol. 3, No. 70, Jun. 6, 1884


Comment and Criticism, pp. 643-644


Letters to the Editor
The Cranial Ribs of Micropterus, p. 644
J. Playfair McMurrich
A Singular Optical Phenomenon, p. 644
Joseph LeConte
Popular Names of California Flowers, pp. 644-645
C. R. Orcutt
The Use of the Method of Rates in Mathematical Teaching, p. 645
Wm. Woolsey Johnson
Pleuracanthus and Didymodus, pp. 645-646
E. D. Cope


The Government, and Economic Entomology, pp. 646-647
Recent Geological Observations in the Canadian North-West Territory, pp. 647-648
George M. Dawson

Five Brazilian Diamonds, pp. 649-650
George F. Kunz

The Distribution of Comets with Reference to Solar Motion, pp. 650-651
R. H. Tucker, Jun.

Volcanic Sand Which Fell at Unalashka, Alaska, Oct. 20, 1883, and Some Considerations concerning Its Composition, pp. 651-654
J. S. Diller

Meteorological Charts of the North Atlantic, pp. 654-657
W. M. Davis

Invertebrates of the Talisman Expedition, pp. 657-658
W. H. Dall

The Relation of the Mound-Builders to the Historic Indians, pp. 658-659
Encke's Comet, and the Resisting Medium, p. 660
Thouar and Crevaux, pp. 660-661
W. H. D.

Coues's Biogen, pp. 661-664
Biogen: A Speculation on the Origin and Nature of Life
Elliott Coues
Review author[s]: Josiah Royce

Report of the Observatory at Herény, Hungary, p. 664
Publikationen des Astrophysikalischen Observatoriums zu Herény in Ungarn
Eugen von Gothard

Intelligence from American Scientific Stations, pp. 665-666
Recent Proceedings of Scientific Societies, pp. 666-667
Notes and News, pp. 667-670

Previous Issue: Vol. 3, No. 68, May 23, 1884
Next Issue: Vol. 3, No. 70, Jun. 6, 1884



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