CONTENTS. 



Copenhagen, to Professor Pictet of Geneva, upon Soruy^ 

 rous Vilrations 251 



XLIX. On the Use of the Sutures in the Skulls of Ani- 

 mals. By Mr. B. Gibson 256 



L. On the Existence of Phosphate of Magnesia in Bones. 

 By M. FouRCRov 269 



LI. Notices respecting New Books 265 



LI I. Proceedings of Learned Societies 271 



LIII. Intelligence and Miscellaneous Articles . . . . 282 



LIV. On Transit Instruments. By Ez. Walker, Esq. 2S9 



LV. Account «/' a Series of Experiments, showing the 

 Effects of Compression in modfying the Action of Heat. 

 By Sir James Hall, Bart. F.R.S. Edin. .. 291 



LVI. Observations and Advices respecting Improvements 

 compatille luith the quickest Manufacture of Muscovado 

 Sugar, and conducive to the Melioration of the Rum. By 

 BiWAN UlGGlSS, M. D 308 



LVTI. Letter of M. Tardy de La Brossy to Professor 

 Pictet, of Geneva, upon the Experiments of Mr. Bid- 

 DLE, relative to the Density of frozen Mercury . . 322 



LVIII. Analysis of the sulphuretted Oxide of Manganese of 

 Nay gag. J5y M. VAuauELiN 324 



LIX. Memoir on the Eremophilus and Astrollepus, two new 

 Genera of the Order of Apodes. By M. de Humboldt 



329 



LX. Meinoir on a new Species of Pimelodus throivn nut of 

 the Volcanoes in the Kingdom of Quito ; ivith some 

 Particulars respecting the Volcanoes of the Andes. By 

 M. DE Humboldt 333 



LXI. Memoir on a new Species of Monkey, found in the 

 eastern Declivity oj' the ylndes. By M. de Humboldt 



339 



LXII. Analysis of the Hot Springs at Bath. B// Mr. Ri- 

 chard Phillips, Member of the Askcsian and of tlic 

 British Mineralogiral Societies 342 



LXI II. Proceedings (f Learned Societies 361 



LXIV. Intelligence and Miscellaneous Articles . . 366 



THE 



