1875.] Mr. G. Gore on the Rotations of Bar-magnets, fyc. 121 



Hirn (Gr. A.) Exposition analytique et experhnentale de la Theorie 

 Mecanique de la Chaleur. 3 e Edition. Tome I. 8vo. Paris 1875. 

 Theorie analytique elementaire du Planimetre Amsler. 8vo. Paris 

 1875. The Author. 



Kronig ( — ) Das Dasein Gottes und das Gliick der Menscheu, materi- 

 alistisch-erfahrimgsphilosophische Studien. 8vo. Berlin 1874. 



The Author. 



Marchand (E.) Etude sur la Eorce Chimique contenue dans la lumiere 

 da Soleil, la Mesure de sa puissance et la determination des climats 

 qu'elle caracterise. 8vo. Paris 1875. Pieces justificatives. 



The Author. 



Smee (A. H.) Milk in Health and Disease. 12mo. London 1875. 



The Author. 



Stockwell (J. N.) Theory of the Moon's Motion. 8vo. Philadelphia 

 1875. The Author. 



Wallich (Dr. G-. C.) On the true Nature of the so-called " Bathybius," 

 and its alleged Eunction in the Nutrition of the Protozoa. 8vo. 

 London 1875. The Author. 



Map of New South Wales. Mounted. 



The Proprietors of the ' Sydney Mail. 



December 9, 1875. 

 Dr. J. DALTON HOOKER, C.B., President, in the Chair. 



The President announced that he had appointed as Vice-Presidents : — ■ 



The Treasurer. 

 Prof. J. C. Adams. 

 Capt. Evans. 

 Dr. Griinther. 

 Dr. W. Pole. 



The Presents received were laid on the table, and thanks ordered for 

 them. 



The following Papers were read : — 



I. "On some Electro-magnetic Rotations of Bar-magnets and 

 Conducting- wires on their Axes/' By G. Gore, E.R.S. 

 Received August 30, 1874. Revised October 2, 1875. 



1. In all the published forms of Ampere's experiment of the electro- 

 magnetic rotation of a vertical bar-magnet or conducting-wire upon its 



VOL. XXIV. K 



