iv CONTENTS. 



Page 



18. Comparison of the Mean Temperature of the Air and the Water on 



the Surface of the Ocean within twenty-four hours . . 21 



19. Professor Oltmanns on the Geography of South America . . 212 



20. On Beauchamp's Geographical Positions in the East (Prof. Oltmanns) ibid. 



21. Eumenian Marbles ...... 214 



22. On the Illumination of Theatres additional Remarks (Mr. Ainger) ibid. 



