16 EDUCATIONAL BOOKS. 



Elementary Class- Books continued. 



principles on -which the observations made with these instruments are 

 treated for deduction of the distances and weights of the bodies of the 

 Solar System" 



ASTRONOMY. 



ELEMENTARY LESSONS IN ASTRONOMY. With 

 Coloured Diagram of the Spectra of the Sun, Stars, and 

 Nebulae, and numerous Illustrations. By J. NORMAN LOCKYER, 

 F.R.S. New Edition. i8mo. $s. 6d. 



" Fully clear > sound , and worthy of attention , not only as a popular expo- 

 sition, but as a scientific 'Index'" ATHEN^UM. " The most fasci- 

 nating of elementary books on the Sciences" NONCONFORMIST. 

 QUESTIONS ON LOCKYER'S ELEMENTARY LESSONS 

 IN ASTRONOMY. For the Use of Schools. By JOHN FORBES- 

 ROBERTSON. i8mo. cloth limp. is. 6d. 



PHYSIOLOGY. 



LESSONS IN ELEMENTARY PHYSIOLOGY. With 

 numerous Illustrations. By T. H. HUXLEY, F.R.S., Professor 

 of Natural History in the Royal School of Mines. New Edition. 

 i8mo. cloth. 4^. 6d. 

 * ' Pure gold throughout. " GUARDIAN. ' ' Unquestionably the clearest 



and most complete elementary treatise on this subiect that we possess in 



any language" WESTMINSTER REVIEW. 



QUESTIONS ON HUXLEY'S PHYSIOLOGY FOR SCHOOLS. 

 By T. ALCOCK, M.D. i8mo. is. 6d. 



BOTANY. 



LESSONS IN ELEMENTARY BOTANY. By D. OLIVER, 

 F. R. S. , F. L. S. , Professor of Botany in University College, London. 

 With nearly Two Hundred Illustrations. New Edition. i8mo. 

 cloth. 4^. 6d. 



CHEMISTRY. 



LESSONS IN ELEMENTARY CHEMISTRY, INORGANIC 

 AND ORGANIC. By HENRY E. ROSCOE, F.R.S., Professor of 

 Chemistry in Owens College, Manchester. With numerous Illus- 

 trations and Chromo-Litho of the Solar Spectrum, and of the Al- 

 kalies and Alkaline Earths. New Edition. i8mo. cloth. 4^. 6d. 

 " As a standard general text-book it deserves to take a leading place." 

 SPECTATOR. " We unhesitatingly pronounce it the best of all our 

 elementary treatises on Chemistry. "MEDICAL TIMES. 

 A SERIES OF CHEMICAL PROBLEMS, prepared with Special 

 Reference to the above, by T. E. THORPE, Ph.D., Professor of 

 Chemistry in the Yorkshire College of Science, Leeds. Adapted for 

 the preparation of Students for the Government, Science, and 

 Society of Arts Examinations. With a Preface by Professor 

 ROSCOE. i8mo. is. Key. is. 



