A New Vvlume of the u International /,/,////. Serftt." 



STUDIES IN SPECTRUM ANALYSIS. 



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



CORRESPONDENT OP THE INSTITUTE OF FRANCE, ETC. 



With GO Illustrations. .... lvol.,12mo. Cloth, $2.EO. 



From the Xcir York Knning Post. 



" The peculiar excellence and hiv'h rank of nil the preceding volumes of this 

 serlee is at onceaguaranteeof the high value and character of this. Mr. Lo<-k\cr 



has ill this work entitled himself to a place anmni,' the rare. uood. industrious, 

 ami every way faithful men of the times, who arc' -o successfully disseminating 

 tin' highest and ino-t advanced kinds of useful knowledge aiiioiiir tin- people. 

 These men are. par excellence, the nplifters und eivilizers of humanity." 



Frotn the Xew York Tina*. 

 "Many colored plates and woodcuts assist the eye in this pleasantly-written 



little treatise. A certahi amount ot historical matter i- inters|i<'i>ed here and 

 there. To Sir William Ilersehel. and the elder Mraper. of New \ ork. the author 

 gives the ere lit of the first steps in spectrum photography: '>nt the lole:-cope ol 

 \A. M. Hutherfnni. ol New York, say- Mr. I.ockyer, i- the instrument of the luture, 

 so fur as stellar astronomy is concerned." 



From Ihe A'- /' Ynrk f-'r, ,,/n// 



"The study of spectrum analysis is one fraught with a peculiar fascination, 

 and soi ..... if the author's experiments are exceedingly pieturesijiie in their results. 

 Tuey arc s:> lucidly described, too, that the reader keeps on. from pau'e to piii/e. 

 never flagging in lnterep( in the matter before him, nor patting down the oook 

 until the last page is reached." 



From the Boston Gazt/f . 



"Mr. Lockyer's work on spectrum analysis is admirably adapted to instruct 

 the non-scientific reader, and to ir.ake him acquainted \\ilh the results ot inn ot 

 the most inipoi-iant di-coverics of t lie century." 



From the I'liilinli'i'li'm M'<. 7,7 // 7V//*rv. 



"Mr. Lockyer is one of the' very foremost autliorities in this important and 

 inter, 'Slim: department of scientific research. The difficulties of the sulijecl are 

 in I'irire measure reliex . I hy an a'tnndaiice of illnst ral ini.s. ami e-peeially liv the 

 colored plates and Hie lemaikahle reproduction- c f epcctnim pbotognpna. 11 



From the I'mriihii,; .liniriinl. 



"Mr. Luckyer is a sejrnlist who spe ik- \\ illi authority, lie show.- the mar- 

 velous a'/i-ncy nl vpeelriim ajialvsis. and tell^ 11- not onl\ the consliluentt! of the 

 'SUU, but clearly explain^ the proee-s |,y which the re-nil is reached." 



From the /.'</.";////> 

 "The freshest work upon this interesting suhject.'' 



D. APPLl-n'ON & CO., r.i-.i \ r>51 BROADWAY, NEW YORK. 



