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Science, New Series, Vol. 15, No. 379, Apr. 4, 1902


Previous Issue: New Series, Vol. 15, No. 378, Mar. 28, 1902
Next Issue: New Series, Vol. 15, No. 380, Apr. 11, 1902


Front Matter (1 p.)


American Morphological Society
The Physiological Zero and the Index of Development for the Egg of the Domestic Fowl, Gallus domesticus, pp. 521-522
Charles Lincoln Edwards
Differentiation without Cleavage in the Egg of the Annelid Chætopterus pergamentaceus, pp. 522-523
Frank R. Lillie
Ingestion and Digestion in Hydra, p. 523
Elliot R. Downing
The History of the Eye of the Blind Fish Amblyopsis, pp. 523-524
Carl H. Eigenmann
Asymmetry in the Rattulidæ, and the Biological Significance of Asymmetry in Some Lower Organisms, pp. 524-525
H. S. Jennings
On the Early Development of Spermophilus tridecemlineatus, a new Type of Mammalian Placentation, p. 525
Thomas G. Lee
Cell-Homology, pp. 525-526
Edmund B. Wilson
Degeneration in Paramæcium and so-called 'Rejuvenescence' without Conjugation, p. 526
Thomas G. Lee
Fertilization in the Pigeon's Egg, pp. 526-527
E. H. Harper
The Development of Color in the Definitive Feather, p. 527
R. M. Strong
An Experimental Study of Regulation in Stenostoma, pp. 527-528
C. M. Child
Cord and Brain, pp. 528-529
J. B. Johnston
The Development of the Postcaval Vein in Didelphys virginiana, p. 529
C. F. W. McClure
Observations on the Habits of Hyalella dentata Smith, pp. 529-530
Samuel J. Holmes
Some Notes on Hybridism, Variation and Irregularities in the Division of the Germ-cell, pp. 530-531
Michael F. Guyer
Relative Variability of Pectens from the East and West Coasts of the United States, p. 531
C. B. Davenport
The Ovary and the Reproductive Period, p. 531
F. H. Herrick


Twenty Years of Section H, Anthropology, pp. 532-534
George Grant MacCurdy

College Work for Agriculturists, pp. 534-537
R. H. Thurston


Scientific Books
----------------, pp. 537-538
Die heterogenen Gleichgewichte, vom Standpunkte der Phasenlehre. Erstes Heft: Die Phasenlehre: Systeme aus einer Komponente
H. W. Bakhuis Roozeboom
Review author[s]: Wilder D. Bancroft
----------------, pp. 538-539
Die wissenschaftlichen Grundlagen der analytischen Chemie, elementar dargestellt
W. Ostwald
Review author[s]: Wilder D. Bancroft
----------------, pp. 539-540
The Engineering Index; Five Years, 1896-1900
Henry Harrison Suplee
Review author[s]: Mansfield Merriman
----------------, pp. 540-541
Insects Injurious to Staple Crops
E. Dwight Sanderson
Review author[s]: F. H. Chittenden


Scientific Journals and Articles, pp. 541-542
Societies and Academies, pp. 542-549


Discussion and Correspondence
Movements toward Union among Geographers, pp. 549-551
W J McGee
Baldwin's Social and Ethical Interpretations, pp. 551-553
Gustavo Tosti
Carnegie Institution, p. 553


Shorter Articles
Discharge from Hot Platinum Wires, pp. 553-554
C. D. Child


Paleontological Notes, pp. 554-555
F. A. L.

Current Notes on Meteorology, pp. 555-557
R. DeC. Ward

Scientific Notes and News, pp. 557-560
University and Educational News, p. 560

Previous Issue: New Series, Vol. 15, No. 378, Mar. 28, 1902
Next Issue: New Series, Vol. 15, No. 380, Apr. 11, 1902



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