CONTENTS. 



NOVEMBER, 1810. 



EngraTings of the following Subjects: 1. Figures to illustrate the Structure and 

 Cl^sification of Seeds, delineated from Nature, by Mrs. A. Ibbetson. 2. A 

 Machine for raising large Stones out of the Earth, by Mr. Richardson. 



I. On the Electric Column. By J. A. de Luc, Esq. F. R. S. - ; 161 



II. On the Structure and Classification of Seeds. In a Letter from Mrs. Agnes 

 Ibbetson ------ <174 



III. Method of ascertaining the VaUic of Growing Timber Trees at different 

 and distant Periods of Time: By Mr. Charles VVaistell of High liolborn 185 



IV. Demonstration of a curious Numerical Proposition, By Mr. P. Barlow, of 

 tlie Royal Military Academy, Woolwich - - 193 



V. Method of raising large Stones out of the Earth: by Mr. Robert 

 Richardson, of Keswick in Cumberland - - - 205 



VI. An Account of a new Method of increasing the charging C'apacity of 

 coated Electrical Jai-s, discovered by John Wiigfield, Es(|., of Shrewsbury, 

 and communicated to Mr. John Cuthbertson, Philosophical Instrument Maker, 

 of Poland Street, Soho ; with Experiments proving the above, by Mr. John 

 Cuthbertson . - - - . 209 



VTI. On the Combinations of Oxigen. By Marshall Hall, Esq. F. R. M. S. E. 

 In a Letter from the Author - - - - 213 



YIII. On the Migration of Swallows. By Thomas Forstcr, Esq. In a Letter 

 from the Author - - - , - - 217 



IX. The Case of a Man, who died in Consequence of the Bite of a Rattlesnake; 

 with an Account of the Effects produced by the Poison. By Everard Home, 



/ Esq. F.R.S. - - - - - 219 



X. Analyses of various Minerals, By Mr. Klaprolh - - 225 



XI. Description of the Dichroit, a new Species of Mineral : by Mr. L. Cordier, 

 Mine Engineer in Chief - - - - 231 



XII. Analysis of the Nadclcrtz of Siberia: by Mr. John - 22G 

 Scientific News - . - . . 23g 

 Meteorological Table -, - - . 14© 



DECEMBER. 



