Vlll CONTENTS OF VOL. XXIX. THIRD SERIES. 



Page 



On Aloetine, by M. Edmond Itobiquet 565 



Wohler's Process for the preparation of Pure Hydrocyanic Acid 566 



Purification of Zinc, by M. de Srnedt 568 



Action of Nitric Acid on Brucine, — Production of Nitrous JEther, 



and Cacotheline 568 



Meteorological Observations for October 1846 569 



Table 570 



Index 57 1 



PLATES. 



I. Illustrative of Dr. Waller's Microscopic Examination of some of the 



principal Tissues of the Animal Frame, as observed in the Tongue 

 of the living Frog, Toad, &c. 



II. Illustrative of Dr. Waller's paper on the Origin of Mucus and Pus- 



globules. 



III. Illustrative of Mr. Birt's Paper on the great Symmetrical Barometric 

 Wave of November. 





