A Nod Volume of the " IntemationcU SeUiUific Seriti.^' 



STUDIES IN SPEGTMH ANALYSIS. 



By J. NORMAN LOCKYER, F. R. S., 



COBBESFONDENT OP THE INSTITTTTB OF FRANCE, ETC. 



With 60 Ulastrations. - - - lTol.,12mo. Cloth, $2.50. 



From the JtTew Tork Eoening Post. 

 " The pecnlinr excellence and bieb rank of all the preceding volnmes ortliia 

 Beries is at once a guarantee of the high valne and character of this. Mr. Lockyer 

 has in this work entitled himself to a place among the rare, eood, indnstrions, 

 and every way faithfiil men of the times, who are so snccessfnlly disseminating 

 the liigheBt and most advanced kinds of nsefnl knowledge among the people. 

 These men are, par excellenee^ the oplifters and civilizers of humanity." 



From the New Tork limes. 

 ^* Many colored plates and woodcnta assist the eye in this pleasantly-written 

 little treatise. A certain amount of historical matter ia interspersed here and 

 there. To Sir William Herschel, and the elderDraper, of New York, the antlior 



E'ves the credit of the first stepa in spectmm photography; but the telescope oi 

 M. Kutherfurd, ofNewTork, says Mr.Lockyer, is theinstrnmentof tbefature, 

 so far as stellar astronomy is concerned." 



From the New Tork Hvening Express. 

 " The stndy of spectmm analysis is one frangbt with a peculiar fascination, 

 and some of tbe author's experiments are exceedingly picturesque in their results. 

 They are so lucidly described, too, that the reader keeps on, fjrom page to pa^e, 

 never llasf^ng in interest in the matter before him, nor patting down the Dook 

 until the last page is reached." 



From the Boston Gazette. 

 "Mr. Lflck^er'a work on spectmm analysis is admirably adapted to instruct 

 the non-scientific reader, and to make him acquainted with the results of one of 

 the most important discoveries of the century." 



From the Philadelphia Weekly Times. 

 "Mr. Lockyer is one of the very foiemost authorities in this important and 

 interesting department of scientific research. The.difflculties of tbe subject are 

 in large measure relieved by an abundance of illnstrations, and especially by the 

 colored plates and the remarkable reproductions of epectmm photographs." 



Prom the Proviclenee Journal. 

 " Mr. Lockyer is a scientist who speaks with authority. He shows the mar- 

 veloui! agency of spectrum analysis, and tells us not only the constituents of the 

 sun, but clearly explains the process by which the resnit is reached." 



From the Baltimore Gazette. 

 "The freshest work upon this interesting subject." 



D. APPLETON ifc CO., 649 & 651 Beoadwat, New York. 



