SCIENCE 



Editoeial Committee : S. Newcomb, Mathematics ; E. S. Woodwaed, Mechanics ; E. C. Pickeeinq, 



Astronomy; T. C. Mkndenhall, Physics ; E. H. Thueston, Engineering; Iea Remsen, Chemistry; 



J. Le CoNTE, Geology; W. M. Davis, Physiography; Henky F. Osboen, Paleontology; "W. K. 



Eeooks, C. Haet Mekeiam, Zoology; S. H. Scudder, Entomology; C. E. Bessey, N. L. 



Beitton, Botany; C. S. MiNOT, Embryology, Histology; H. P. Bowditch, Physiology; 



J. S. Billings, Hygiene ; J. McKeen Cattell, Psychology; Daniel G. Bein- 



TON, J. W. Powell, Anthropology. 



Friday, June 16, 1899. 



CONTENTS: 

 On the Intemaiional Catalogue of Scientific Litera- 

 ture of the Eoyal Society : Peofessor J. Vic- 

 toe Caeus 825 



Some Common Sources of Error in Becent Work on 

 ^Coccidai: De. C. L. Maelatt 835 



Tlie Eoyal Institution 838 



Scientific BooJcs : — 



Campbell's Elements of Practical Astronomy : G- 

 C. C. Infinitesimal Analysis : De. C. J. Keysek. 

 Eoosa on Defective Eyesight : C. A. O. Books 

 Eeceived 842 



Societies and Academies: — 



Tlie Biological Society of Washington : De. O. 

 F. Cook. The Philosophical Society of Washing- 

 ton : E. D. Peeston. Section of Astronomy 

 and Physics of the New York Academy of Sci- 

 ences: De. Wm. S. Day 847 



Discussion and Correspondence : — 



Cerebral Light — Further Observations : De. E. 

 W. SCEIPTUEE 850 



Professor Simon Newcomb 851 



Scientific Notes and News.. 851 



I and Educational News 856 



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

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

 sor J. McKeen Cattell. Garrlson-on-Hudson N. Y. 



ON THE INTEENATIONAL CATALOGUE OF 



SCIENTIFIC LITEEATURE OF THE 



EOYAL SOCIETY.* 



The Eoyal Society of London has already 

 demonstrated its great interest in bibliog- 

 raphy and literature by the publication of the 

 ' Catalogue of Scientific Papers.' It pro- 

 poses to continue its efibrts. In the ' Inter- 



* Translated from the Zoologische Anzeiger, No. 

 566. 



national Catalogue of Scientific Literature,' 

 which it has now planned, the Society in- 

 tends to correct the chief defect of the first 

 undertaking, the absence of a subject in- 

 dex. As is well known, it convened an in- 

 ternational conference, which held meetings 

 in London from the 14th to the 17th of 

 July, 1896. The Conference voted to re- 

 quest the Royal Societj^ to appoint a com- 

 mittee to consider all the unsettled ques- 

 tions laid before it by the Conference. The 

 report of the committee, signed by its chair- 

 man, Professor H. E. Armstrong, was issued 

 late in March, 1898. As compared with the 

 ' Catalogue of Scientific Papers,' the new 

 work is (1) to be more complete, since it is 

 to include all the literature within the 

 fields under consideration — not alone that 

 ' contained in certain periodicals, ' and 

 ' books of definite categories; ' (2) to present 

 the works in two methods of arrangement, 

 (a) according to the name of the author, 

 and (b) according to the contents of the 

 catalogued article or book— and in the two 

 forms, card-catalogue and book-catalogue. 

 But it is to be (3) just as restricted as its 

 predecessor, the ' Catalogue of Scientific 

 Papers,' since it is to take into account only 

 the natural sciences, together with mathe- 

 matics and astronomy, as well as psychology 

 and anthropology. Finally (4) it is to be 

 very much more voluminous, since the title 

 is to be repeated on cross-reference cards 

 under catch-words taken from the contents. 



