SCIENCE 



Editoeial Committee : S. Newcomb, Mathematics ; R. S. Woodward, Mechanics ; E. C. Piokekino 



Astronomy; T. C. Mendenhall, Physics; R. H. Thurston, Engineering; Ira Remsen, Chemistry; 



J. Lb CoNTE, Geology; W. M. Davis, Physiography; Henry F. Osborn, Paleontology; W. K. 



Brooks, C. Hart Merriam, Zoology; S. H. Scudder, Entomology; C. E. Bessey, N. L. 



Beition, Botany; C. S. Minot, Embryology, Histology; H. P. Bowditch, Physiology; 



J. S. Billings, Hygiene ; J. McKeen Cattell, Psychology; 



J. W. Powell, Anthropology. 



Friday, Maech 9, 1900. 



CONTENTS: 



Professor Thomas Egleston: Peofessob A. J. 

 Moses : 361 



The Seventieth Birthday of Carl von Kupffer. — His 

 Life and Works : Professor Bashford Dean.. 364 



Becent Progress in Geodesy: Dr. J. F. Hay- 

 foed 369 



Tlie Plankton of Fresh Water Lakes : C. Dwight 

 Marsh 374 



Scientiflc Books : — 



2'he Cambridge Natural History : PROFESSOR J. 

 H. COMSTOCK. Traite de Zoolngie Concrete : De. 

 Gary N. Calkins. Palxzoie Reticulate Sponges : 

 Charles SoHUOHERT. Books Received 389 



Scientific Journals and Articles 392 



Societies and Academies : — 



The Annual 3Ieeting of the New York Academy 

 of Sciences : Professor Richard E. Dodge. 

 American Mathematical Society : Professor F. 

 N. Cole. The Texas Academy of Science : F. 

 W. S 393 



Discussion and Correspondence : — 



Marginal Tabs for Logarithm Tables : Profes- 

 sor H. "W. HOLMAN 396 



Notes on Physics : F. C. C 396 



Zoological Notes : — 



Bird Migration, Tlie Siereormihes Again: F. 



A. L 397 



The Assay Commission 397 



Scientific Notes and News 398 



i Educational News 400 



MSS. intended for publication and books, etc., intended 

 for review should be sent to the responsible editor, Profes- 

 sor, J. McKeen Cattell, Garrison-on-Hudson, N. Y. 



PROFESSOR THOMAS EGLESTON. 



Thomas Egleston, planner and first pro- 

 fessor of the School of Mines of Columbia 

 University, died on Monday morning, Jan- 

 uary 15th, at his home, 35 West Washing- 

 ton Square, N"ew York City, at the age of 

 sixty- seven years. 



Professor Egleston was born in New York 

 Citj', December 9, 1832. He prepared for 

 college under Dr. Dudley, of Northamp- 

 ton, took the regular four years' classical 

 course at Yale and graduated in 1854 ; and 

 in the following year took a post graduate 

 course in the Yale Scientific School of An- 

 alytical Chemistry under Professor Benja- 

 min Silliman, Jr. 



In 1856 he went to Europe more for rest 

 than to pursue any special course of study, 

 but, becoming interested in the lectures in 

 geology and chemistry at the Jardin des 

 Plantes of Paris, he spent a good deal of 

 time in the collections and laboratories and 

 later, desiring to pursue more systematic 

 work, applied for and obtained the per- 

 mission of the government to attend certain 

 lectures at the Ecole des Mines, especially 

 those of Professor de Senarmont on Min- 

 eralogy, of Elie de Beaumont on Geology, 

 and of Professor Bayle on Paleontology. 

 He completed his course at the school in 

 1860, having not only attended the lectures 

 but worked in all the laboratories. During 

 the vacations and at the close of his course 

 he travelled extensively in France and Ger- 

 many, studying and collecting. 



