SCIENCE. 



iii 



JUST READY. JUST READY. 



THE SUN. 



By C. A.YOUNG, Ph. D, LL. D., Professor of Astronomy in the College of 

 New Jersey. 



With numerous Illustrations. 



"International Scientific Series." One vol. 1 21110., cloth. Price, $2.00. 



CONTENTS: I. The Sun's Relation to Life and Activity upon the Earth ; II. Distances and Dimensions 

 of the Sun; III. Methods and Apparatus for Studying the Surface of the Sun ; IV. The Spectro- 

 scope and the Solar Spectrum; V. Sun Spots and the Solar Surface ; VI. Periodicity of Sun Spots, 

 &c. ; VII. The Chromisphere and the Prominences ; VIII. The Corona; IX. The Sun's Life and 

 Heat; X. Summary of Facts. 



" It is my purpose in this little book to present a general view of what is known and believed about the sun, in 

 language and manner as unprofessional as is consistent with precision. I write neither for scientific readers as such, 

 nor, on the other hand, for the masses, but for that large class in the community who, without being themselves 

 engaged in scientific pursuits, yet have sufficient education and intelligence to be interested in scientific subjects 

 when presented in an untechnical manner ; who desire, and are perfectly competent, not only to know the results 

 obtained, but to understand the principles and methods on which they depend, without caring to master all the 

 details of the investigation." — Extract from Preface. 



D. APPLETON & CO., Publishers, - - - 1, 3 & 5 BOND STREET, New York. 



Dr. Scott's Electric Hair Brush. — A good hair brush cannot be bought for 

 much less than the sum for which Dr. Scott's electric brush can be secured. 

 This brush, aside from the curative properties claimed for it, is a well made arti- 

 cle, handsome in appearance and first-class in every respect. It is not a metallic 

 brush, but is made of pure bristles. Its electrical qualities are very strong, and 

 will manifest themselves by causing the needle of a magnetic compass to vibrate 

 even whh a thick book on the top of a table intervening. Violent vibrations of 

 the needle can be caused by passing the brush quickly back and forth within 

 four or five inches of the compass. It is claimed for this brush that its use will 

 cure headaches and neuralgia, will remove dandruff, and in most cases will pre- 

 vent the hair from falling or turning gray. In support of this claim many testi- 

 monials from responsible persons are adduced. Evidently its use would be of 

 great benefit wherever electricity would prove beneficial, and could not in any 

 event result in harm. — Boston Journal, May 28, 1881. 



SCIENCE 



A WEEKLY JOURNAL OF SCIENTIFIC PROGRESS. 



Vol. I 1, No. 67, - October 8, 1 881 . 



CONTENTS. 



Teaching of Chemistry and Physics in the United Sta'es (Edit.) ; On the Sources of 

 Energy in Nature Available for ihe Production of Mechanical Effect, by Sir William 

 Thomson ; On the Arrestauon of Infusorial Life, by Professor Tyndall; Plante's 

 Rheostatic Machine (translated by the Marchioness Clara Lanza), by Th. Du Mar- 

 cel (6 illustrations) ; Process for Utilizing Waste Products in the Extraction of Cop- 

 per, by J. Dixon ; A New Demonstration of the Carbonic Acid of the Breath, by C- 

 F. Cross ; The Best Method of Mounting Whole Chick Embryo, by Dr. C S. 

 Minot ; On the Alleged Decomposition of the Elements, by Professor Dewar ; 

 Astronomy ; Barnard's Comet (d) 1881 ; Microscopy ; Books Received ; A Treatise 

 on Bright's Disease, by Dr. James Tyson Meteorological Report, by Dr. Daniel 

 Draper; Notes, &c, &c. 



WEBSTER 



The following from Webster, page 1164, shows 

 the value of the Illustrative .Definitions in 



Webster's Unabridged Dictionary 



1, flyingjib; 2, jib; 3, fore-top-mast-stay sail; 

 4, fore-course; 5, foretop sail; 6, foretop-gallant 

 sail; 7, fore-royal ; 8, fore sky-sail; 9, fore-roy- 

 al studding sail; IO, foretop-gallant studding- 

 sail; 11, foretop-mast studding-sail; 12, main- 

 course; 13, maintopsail; 14, maintop-gallant 

 sail; 15, main-royal; 1G, main sky-sail; 17, 

 main royal studding-sail ; 18, main top-gallant 

 studding-sail; 19, maintop-mast studding sail; 

 30, mizzen-course; 21, mizzen-top sail; 22, 

 mizzen-top-gallant sail; 23, mizzen-royal; 24, 

 mizzen sky-sail; 25, mizzen-spanker. 



The pictures in Webster under the 12 words. 

 Beef, Boiler, Castle, Column, Eye, Horse, 

 Moldings, Phrenology, Ravelin, Ships, 

 (pages 1164 and 1219) Steam engine. Tim- 

 bers, define 343 words and terms far better 

 than they could be defined in words. 



New Edition of WEBSTER, has 

 118,000 Words, 3000 Engravings, 

 4600 New Words and Meanings, 



Biographical Dictionary 



of over 9700 Names. 



Published by G. &C. MERRI AM, Springfield, Ma& 



