SCIENCE 



Editorial Committee : S. Newoomb, Mathematics ; Ej S. "Woodward, Mechanics ; E. C. Pickering, 



Astronomy; T. C. Mendenhall, Physics; E. H. Thurston, Engineering; Ira Eemsen, Chemistry; 



J. Le Conte, Geology; W. M. Davis, Physiography; O. C. Maesh, Paleontology; W. K. 



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



Botany; Henry F. Osborn, General Biology; H. P. Bowditch, Physiology; 



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



Daniel G. Brinton, J. W. Powell, Anthropology ; 



G. Brown Goode, Scientific Organization. 



Feidat, May 8, 1896. 



CONTENTS: 



Tlie Dedication of the Neio Site of Columbia Univer- 

 sity 681 



Psychological Notes upon Sleight-of-hand Experts : 

 Joseph Jasteow 685 



The Influence of Carbon Dioxide on the Protoplasm of 

 Living Plant Cells: D. T. MacDougal 689 



Notes on Certain Undescribed Clay Occurrences in 

 Missouri: Geo. T. Ladd 691 



Notes on a Breathing Gas Well : Harold W. Fair- 

 banks 693 



Source of X-Bays: A. A. Michelson, S. W. ' 

 Stratton 694 



Current Studies in Experimental Geology : — 



Tlie Color of Water as Affected by Convectional 

 Currents ; The Plasticity of Ice Crystals : T. A. 

 Jaggar, Jr. 696 



Notes upon Agriculture and Horticulture : — 



The Potato Scab ; Cherries ; Currants : Byron 

 D. Halsted 698 



Current Notes on Anthropology : — 

 South American Linguistics; Tlie Diminution of 

 Natality: D. G. Brinton 699 



Scientific Notes and News : — 



Vivisection in the District of Columbia ; Badiation 

 from Uranium Salts ; General 700 



University and Educational News •. 704 



Discussion and Correspondence : — 



On Pood's Demonstration of the Regular m- Specu- 

 lar Beflection of the Bontgen Bays by a Platinum 

 Mirror : ALFRED M. Mayer. Pseudo-science 

 in Meteorology : B. E. Fernow. Zoology and 

 Biology : W. K. BROOKS. Tlie Use of the Tow- 

 net for Collecting Pelagic Organisms: Wm. E. 

 Eitter ...705 



Scientific Literature : — 



Giddings' Principles of Sociology : Simon N. 

 Patten. Mason's Water Supply 709 



Scientific Journals : — • 



Psyche; Tlie Psychological Beview 712 



Societies and Academies : — 



Biological Society of Washington : F. A. Lucas. 

 Geological Society of Washington: W. F. MoE- 

 SELL. Academy of Natural Sciences of Philadel- 

 phia: Edw. J. Nolan. Geological Conference 

 of Harvard University: T. A. Jaggar, Jr. 

 Proceedings of the Torrey Botanical Club : W. A. 

 Bastedo ......713 



THE DEDICATION OF THE NEW SITE OF 

 COLUMBIA UNIVEBSITY. 



Columbia University has under Presi- 

 dent Low become a university in name, in 

 externals and in fact, and hencefortli takes 

 rank with the great universities of the 

 world. 



The new site of the University was dedi- 

 cated on May the second with ceremonies 

 worthy of its stately buildings in course of 

 erection and of its commanding position 

 above the City of New York. The site of 

 the University, occupying somewhat more 

 than seventeen acres and purchased by the 

 trustees at a cost of $2,000,000, is on the 

 summit of Morningside Heights, between 

 Morningside Park on the one hand and 

 Eiverside Park on the other. On the same 

 Heights and adjacent to the University will 

 be the Cathedral of St. John the Divine, 

 St. Luke's Hospital, Grant's Mausoleum 

 and, affiliated with the University, Bar- 

 nard College and the Teachers' College. 



As is shown in the accompanying figures, 

 the Library Building, erected as a memorial 

 of Abiel Abbot Low, by his son. President 

 Low, occupies the central and most elevated 

 position. The basement of Milford granite 

 and the first story of Indiana limestone, al- 

 ready erected, indicate the plan and archi- 

 tectural character of the building. It is 

 classic in style, in the form of a Greek cross, 

 surmounted by a dome. Its width is 192 feet 

 and the height of the dome will be 135 feet. 



