PHYSICAL SCIENCE. 25 



tion : Sources of Loss and of Gain to the Blood ; the Function of 

 Alimentation ; Motion and Locomotion ; Sensations and Sensory 

 Organs ; the Organ of Sight ; the Coalescence of Sensations with 

 one. another and with other States of Consciousness ; the Nervous 

 System and Innervation ; Histology, or the Minute Structure of 

 the Tissues. A Table of Anatomical and Physiological Constants 

 is appended. The lessons are fully illustrated by numerous en 

 gravings. " Pure gold throughout " Guardian. " Unquestion- 

 ably the clearest and most complete elementary treatise on this subjeci 

 that we possess in any language."- -Westminster Review. 



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 Heidelberg. 

 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. 



" It is to Kirchhoffwe are indebted for by far the best and most accurate 

 observations of these phenomena"- Edin. Review. " 71iis memoir 

 seems almost indispensable to every Spectrum observer" Philo- 

 sophical Magazine. 



Lockyer (J. N.) ELEMENTARY LESSONS IN AS- 

 TRONOMY. With numerous Illustrations. By J. NORMAN 

 LOCKYER, F.R.S. Eighth Thousand. iSmo. $s.6d. 



The author has here aimed to give a connected view of the whole subject, 

 and to supply facts, and ideas founded on the facts, to serve as a basis 

 for subsequent study and discussion. The chapters treat of the 

 Stars and Nebula ; the Sun; the Solar System ; Apparent Move- 

 ments of the Heavenly Bodies ; the Measurement of Time; Light; 

 the Telescope and Spectroscope; Apparent Places of the Heavenly 

 Bodies ; the Real Distances and Dimensions ; Universal Gravitation. 



The most recent Astronomical Discoveries are incorporated. Mr. 

 Lockyer s work supplements that of the Astronomer Royal. ' ' 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. 



