12 SCIENTIFIC CATALOGUE. 



Kirchhoff (G.)— RESEARCHES ON THE SOLAR SPEC- 

 TRUM, and the Spectra of the Chemical Elements. By G. 

 Kirchhoff, Professor of Physics in the University of Pleidclberg. 

 Second Part. Translated, with the Author's Sanction, from the 

 Transactions of the Berlin Academy for 1862, by Henry R. 

 Roscoe, B.A., Ph.D., F.R.S., Professor of Chemistry in Owens 

 College, Manchester. Part II. 4to. $s. 



Lockyer (J. N.) — Works by J. Norman Lockyer, F.R.S.— 

 ELEMENTARY LESSONS IN ASTRONOMY. With nu- 

 merous Illustrations. New Edition. i8mo. 5-r. 6d. 

 " The book is full, clear, sound, and worthy of attention, not only as 



a popular exposition, but as a scientific * Index.' '" — Athenaeum. 



" The most fascinating of elementary books on the Sciences." — ■ 



Nonconformist. 



THE SPECTROSCOPE AND ITS APPLICATIONS. By J. 



Norman Lockyer, F. R.S. With Coloured Plate and numerous 

 Illustrations. Second Edition. Crown 8vo. 3s. 6d. 

 This forms Volume One 0/"" Nature Series," a series of popular 

 Scientific Works now in course of publication, consisting of popular 

 and instructive works, on particular scientific subjects — Scientific 

 Discovery, Applications, History, Biography — by some of the 

 most eminent scientific men of the day. They will be so written as 

 to be interesting and intelligible even to non-scientific readers. 



CONTRIBUTIONS TO SOLAR PHYSICS. By J. Norman 

 Lockyer, F.R. S. I. A Popular Account of Inquiries into the 

 Physical Constitution of the Sun, with especial reference to Recent 

 Spectroscopic Researches. II. Communications to the Royal 

 Society of London and the French Academy of Sciences, with 

 Notes. Illustrated by 7 Coloured Lithographic Plates and 175 

 Woodcuts. Royal 8vo. cloth, extra gilt, price 3U. 6d. 

 " The first part of the work, presenting the reader with a continuous 

 sketch of the history of the various inquiries into the physical con- 

 stitution of the sun, cannot fail to be of interest to all who care for 

 the revelations of modern science ; and the interest will be enhanced 

 by the excellence of the numerous illustrations by which it is accom- 

 panted" — Athenaeum. " The book may be taken as an authentic 

 exposition of the present state of science in connection with the im- 

 portant subject of spectroscopic analysis. . . . Even the unscientific 

 public may derive much information from it." — Daily News. 



Lubbock.— THE ORIGIN AND METAMORPHOSES OF 

 INSECTS. By Sir John Lubbock, M.P., F.R.S. With 



Numerous Illustrations. Second Edition. Crown Svo. 2> s - &d. 



This volume is the second of "Nature Series." The Athenaeum 

 says : ( 'It is written in a clear and pleasing style, like all the 

 author's scientific treatises, and is nicely illustrated with outline 

 wood-cuts. We can most cordially recommend it to all young 

 naturalists." "As a summary of the phenomena of insect meta- 



