622 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



Todhunter (I.). A History of the Mathematical Theories of Attraction 

 and the Figure of the Earth from the time of Newton to that of Laplace. 

 London : Macmillan & Co. 1874. 8vo, 2 vols. 



TRANSITS AXD ECLIPSES. 



Forbes (George). The Transit of Venus. London : Macmillan & Co. 

 1874. 12mo, $1. (Nature Series.) 



Johnson (S. J.). Eclipses, Past and Future, with General Hints for 

 Observing the Heavens. London: Parker, 1874. 12mo, cloth, 4s. 



Proctor (Richard A.). Transit of Venus : a Popular Account of Past 

 and Coming Transits, from the first observed by Horrocks, A.D. 1639, to the 

 Transit of A.D. 2112. London : Longmans & Co. 1874. Crown 8vo, 8s.6d. 



PHYSIC S. 



GENERAL. 



KohlraUSCh (Dr. F.). An Introduction to Physical Measurements, 

 with Appendices on absolute Electrical Measurements, etc. Translated 

 from the second German edition by Thomas H.Waller and II. R. Proctor. 

 New York, 1874. 8vo. 



Rodwell (G. F.). Notes of a Course of Nineteen Lectures on Natural 

 Philosophy. London, 1873. 12mo, cloth. 



CONSERVATION OF ENERGY. 



Grove (Sir W. R.). The Correlation of Physical Forces. Sixth edition. 

 With other Contributions to Science. London : Longmans & Co. 1S74. 

 8vo. 



Heath (D. D.). An Elementary Exposition of the Doctrine of Energy. 

 London : Longmans & Co. 1874. 8vo, cloth, is. Gd. 



Stewart (Balfour). The Conservation of Energy : being an Element- 

 ary Treatise on Energy and its Laws. New York : D. Appleton & Co. 



1873. 12mo, cloth, $1 50. (International Scientific Series.) 



MECHANICS. 



Goodeve (T. M.). Principles of Mechanics. London : Longmans & Co. 



1874. 12mo. (Text-books of Science.) 



LIGHT. 



LeCOq (de Bois Vaudran). Spectres Prismatiques et en Longeurs 

 d'Ondes destines aux recherches de chimie minerale, avec Atlas des Spectres. 

 Paris : Gauthier-Villars, 1874. 1 vol. text, and 1 vol. plates. 



^ SpottisWOOde (W.). Polarization of Light. London : Macmillan & 

 Co. 1874. Crown 8vo. (Nature Series.) 



