July 27, 1888.J 



SCIENCE. 



Bishops Potter, Stevens, and Robertson ; Presidents Mark Hopkins, Hitchcock, and Barnard; 

 Profs. Parker, Draper, and Beard; and thousands of the world's best brain workers, have used and 

 recommended CROSBY'S VITALIZED PHOSPHITES, for the reHef of Nervous Derange- 

 ments, Brain Weariness, Dyspepsia, and DebiHty. 



It is a Vital Nutrient Phosphzte, not an inert Laboratory Phosphate. 



56 W. 25th St.. ISr. Y. For sale by Druggists, or sent by Mail, 81. 



ONE LANGUAGE FOR THE WHOLE WORLD 



"WORLD ENGLISH," just now ready, is, as its 

 name im|jlies, a new form of the English language for inter- 

 national communication. 



It is the invention of Prof. Alexander Melville Bell, the 

 renowned author of "Visible Speech," and is so simple, and at 

 the same time so practicable, that it cannot fail of soon being 

 generally accepted as the Universal Language. 



Its great superiority over " Volapuk," or any other 

 artificial language, may readily be seen by a comparison of the 

 two systems. 



Ex-President Andrew D. White, of Cornell University, 

 says; " I believe that the highest interests of Christian civil- 

 ization and of humanity would be served by its adoption 

 China and Japan would be made English-speaking peoples 

 within fifty years, and so brought within the range of Chris- 

 tianizing and civilizing ideas, in the largest sense. All exist- 

 ing missionary work is trivial as compared with this. For 

 your sys'em would throw wide open those vast countries, as, 

 indeed, all the countrie-; of the world, to the whole current of 

 English and American thought." 



" World English" can be had of all booksellers, or will 

 be sent for 25 cents, post free, by the publisher, 



N. D. C. HODGES, 



47 Lafayette Place, 



New York. 



Wan is. 



AX EDUCATED AND CAPABLE PERSON 

 wanted in every town and city to canvass for sub- 

 scriptions to Science : liberal compensation. Address, 

 naming references, Publisher of Science, 47 Lafayette 

 Place, New York city. 



Unalterable ^3JT*''''2«^"~SiT^ ^ Fragrant 



GLUE^iH^«*i PASTE 



A stronff and harinlcss prcp.^rntion "f flour and glue for 

 Photographers, iMcumfacturers, .Merchants, Insurance 

 Companies. Hanks, and family and office use. Contains 

 no acids. Unlike Mucilage, adheres and dries immedi- 

 ately. N. Y. Liquid Glue and Adhesive Co., Preparers 

 of Peter Cooper's Glue in Liquid Form, i8 N. William 

 St., New York. Used in this ojffice. 



GERMAN SIMPLIKIED.— SPANISH SIMPLI- 

 FIED.— Self-taucht. 12 Numbers, 10 cents each. Cir- 

 cuLars free. Prof. A. KNOFLACH, 140 Nassau St,,N.Y. 



M/\G/\ZINES AND REVIEWS!! 



Complete sets of :ill the leading Magazines and Reviews 

 and back numbers of several thovisand periodicals, for 

 sale al low rates. Full files of Scienct^ cither bound 

 or unbound, or odd volumes and numbers supplied. Sub- 

 scriptions taken on favorable terms for any periodical 

 either American or foreign. Address 

 THE AMERICAN AND FOREIGN MAGAZINE 

 DEPOT, 47 Dry street. New York City. 



SCIENCE. 



AN ILLUSTRATED WEEKLY JOURNAL. THE 



SCIENCE COMPANY. OWNERS AND 



PUBLISHERS. 



Officers and Directors. — D. C Oilman, o( 

 Baltimore. President.- Simon Newcomb, of Washington, 

 i^ice-Pmident: Gardiner G. Hubbard, of Washington; 

 Alkx. Graham Bei.l, of W.-ishington; O- C. Marsh. 

 of New Haven; J. W. Powell, of Washington; W. P 

 Trowbridge, of New York; S. H. Scudder, of Cam- 

 bridge. 



SCIENCE appears every Friday. Volumes begin in 

 July and January. Communications will be welcomed 

 from any quarter. Rejected manuscripts will be returned 

 to the authors only when the requisite amount of 

 postage accompanies the manuscript. 



Address all correspondence to .. SciENCE," 

 47 Lafayette Place, New York. 



SuDSCRiPTiONS. — United States and Canada, $3.50 a year 

 Great Britain and Europe^ $4 a year 



Science Club-ratcs (in one remittance). 



I subscr. I yr $ 3,50 



a '* I yr 6.00 



3 " 1 yr 3.00 



MAP-MAKING. 



All publishers or others de- 

 siring to have maps made, 

 either from relief plates or by 

 lithograph, should write to us 

 for estimates before placing 

 their orders elsewhere. Any 

 work entrusted to us will be 

 carefully made under the super- 

 vision of our geographical edit- 

 or, Dr. Franz Boas. 

 N. D. C. HODGES, 



Publisher of Science, 

 47 Lafayette Place, 



New York. 



