CONTENTS 



OF THE 



EIGHTEENTH VOLUAiI 



i. Facts Ulustrafive of the Shrinkage and Lxpansion of 

 Cast Iron, &'c. c#r. By David Musiiet, Esq. of the 

 Calder Iron-Jforks 3 



II. Of the Herrins, Fishery. Translated from the French 

 of M. DuHAMEL and others 12 



III. Sketch of a Geological Delineation of South America. 

 By F. A. Vox Humboldt 26 



IV. Natural Histori/ and Anatomical Description of a new 

 Genus of Fish navied Polyplera, found in the Nile. Bif 

 G. GEOFruor 36 



V. Account of the Process folloived by M, Pierre jAauES 

 Papillox for dyeing Turkey Red 43 



VI. The Life of John Dolloxd, F. i?. 5., Inventor of 

 the Achromatic Telescope 47 



VII. ]\Jemoir by LordNAPiKR, of Merchiston, the celebrated 

 Inventor of the Logarithms, on his different Contrivances 

 ^' for the Defence of this Island ;" with Remarks .... 53 



VIII. Observations on Dr. Wollaston's Statements re- 

 specting an Improvement in the Form of Spectacle- 

 Glasses. J5// William Jones, Esq. F.Am. P. S. Op- 

 tician, Holborn 65 



IX. Thirteenth Communication from D/-. Thornton, re- 

 lalive to Pneumatic Medicine 71 



X. On the Influence of the component Parts of the Soil on 

 Fegetation. By M. Otto 75 



XI. On the Use of Steatites in the Art of engraving on 

 Stones ' "83 



XII. N^otices respecting New Books 85 



XIII. Intelligence and Miscellaneous Articles 90 



XIV. Experiments made for the Purpose of ascertaining 

 wliether there be a real Acid <f Cobalt ; or, in other IVords, 

 whether Cobalt actually unites ivith Oxygen to the Degree 

 necessary for Acidification. By C. V. Bucholz .... 97 



XV. Memorial of Mr. E. G. J. Crookeens respecting 

 the Distillation of Spirits, &c. in Holland 107 



XVI. On the Cure of the Gout. By A. Stenhouse, M.D. 

 Edinburgh 1 1 'I 



Vol. XVlll. No. 72. a XVII. On 



