SCIENC 



\\j<3 10 tt^ 



PUBLISHED BY N. D. C. HODGES, 874 BROADWAY, NEW YOEK. 



A WEEKLY NEWSPAPER OF ALL THE kIS 



ND SCIENCES. 



:"^^.. 



Tenth Year. 

 Vol. XX. No. 496. 



AUGUST 5, 1892. 



Single' •< jpies, Ten Cents. 

 $3.50 Per Year, in Advance. 



Contents. 



On the Fundamental Hypotheses of 

 Abstract Dynamics. J. C. Mac- 

 gregor 



The Great Lake Basins. P. J Farns- 

 ivorth 



Notes and News 



The Hopkins Seaside Laboratory. 

 David S. Jordan 



The Antenna and Sting of Yikilcab 

 as Components in the Maya Day- 

 Signs. H. T. Cresson 



Letters to the Editor. 



The English Sparrow and Other 



Birds. F. A. Sampson 



On Maya Chi-onology. Ed. Seler... 

 The Palenque Tablet. Cyrus Thomas 



Book Eeviews. 



On the Modification of Organisms. . . 



The Apodidse 



Lessons in Elementary Biology 



Among the Publishers 



Entered at the Poai-Offlce of New York. N.Y., 

 Second-Class Mail Matter. 



THE 



idl Tell 



COMPANY. 



98 MILK ST,, BOSTON, MASS, 



Tbi.s Company owns the Letters 

 Patent granted to Alexander Gra- 

 ham Bell, March 7th, 1876, No. 

 174,465, and January 30, 1§77, 

 No. 1§6,787. 



The Transmission, of Speech by 

 all known forms of ELECTRIC 

 SPEAKING TELEPHONES in- 

 fringes the right secured to this 

 Company by the above patents, and 

 renders each individual user of tel- 

 ephones, not furnished by it or its 

 licensees, responsible for such un- 

 lawful use, and all the conse- 

 quences thereof and liable to suit 

 therefor. 



Mew Method of Protecting Properly 

 from Lightning. 



The Lightning Dispeller. 



Price, $20 to $30.— According to size. 



The Patent Lightning Dispeller is a conduc- 

 tor specially designed to dissipate the energy 

 of a lightning discharge, — to prevent its 

 doing harm,— placing something in its path 

 upon which its capacity for causing damage 

 may be expended. 



No recorded case of lightning stroke has 

 yet been cited against the principle of the 

 Dispeller. So far as known, the dissipation 

 of a conductor has invariably protected under 

 the conditions employed. 



Correspondence solicited. 



AGENTS WANTED. 



The American Lightning Protection Company 



United Bank Building, Sioux City, Iowa. 



THE LABRADOR COAST. 



A JOURNAL OF TWO SUIVIMER CRUISES 

 TO THAT REGION. 

 WITH NOTES ON ITS EARLY DISCOV- 

 EEY, ON THE ESKIMO, ON ITS PHY- 

 SICAL GEOGRAPHY, GEOLOGY AND 

 NATURAL HISTORY, TOGETHER WITH 

 A BIBLIOGRAPHY OF WORKS, ARTI- 

 CLES, AND CHARTS RELATING TO 

 THE CIVIL AND NATURAL HISTORY 

 OF THE LABRADOR PENINSULA. 



By ALPHEUS SPRING PACKARD, M.D., Ph.D. 



Sportsmen and ornithologists will be interested in 

 the list of Labrador birds by Mr. L. W. Turner, 

 which has been kindly revised and brought down to 

 date by Dr. J. A. Allen. Dr. S. H. Scudder has con- 

 tributed the list of butterflies, and Prof. John 

 Macoun, of Ottawa, Canada, has prepared the list of 

 Labrador plants. 



Much pains has been taken to render the bibliog- 

 raphy complete, and the author is indebted to Dr. 

 Franz Boas and others for several titles and impor- 

 tant suggestions; and it is hoped that this feature of 

 the book will recommend it to collectors of Ameri- 

 cana. 



It is hoped that the volume will serve as a guide 

 to the Labrador coast for the use of travellers, 

 yachtsmen, sportsmen, artists, and naturalists, as 

 well as those interested in geographical and histori- 

 cal studies. 



. 513 pp., 8°, $3.50. 



N. D. C. HODGES, 



874 BROADWAY, NEW YORK. 



SCIENCE 



The Illustrated Popular Science Weekly. 

 TENTH YEAR. 



More than Four hundred of the lead- 

 ing scientific men and women of Amer- 

 ica have agreed to contribute to the 



paper during the coming year ; and, as others 

 are constantly joining in this move, to make the 

 paper more valuable than ever, it cannot be long 

 before there will be a body of over five hun- 

 dred competent users of this weekly 

 medium of scientific discussion. 



See last page of this num her. 



Send 50 cents, in postage stamps if most con- 

 venient, for 2 months' trial subscription. 



N. D. c. 



874 Broadway, 



HODGES, 



NEW YORK. 



