TABLE OF CONTENTS 



TO THIS FIFTEENTH VOLUME. 



SEPTEMBER. 



fcngravings of the following Objects : i. The Furnaces and Apparatus 



at present used for refining Lead. Designed by Mr. John Sadler. 



I. The process for refining Lead as practised in England. In a Letter 

 from Mr. J, Sadler Page i 



II. Facts and Observations relating to the Winds, Waves, and other 

 Phenomena by which the Surface of the Sea is affected. In a Letter 

 from James Horsburgh, Esq 6 



III. A third Series of Experiments on an artificial Substance which 

 possesses the principal characteristic properties of Tannin 3 with 

 some Remarks on Coal. By Charles Hatchett, Esq. F.R.S, From 

 the Philosophical Transactions for 1806 15 



IV. On the Force of Percussion. By William Hyde WoUaston, M.D. 

 Sec. R. S. Being the Bakerian Lecture which was read before the 



■ Royal Society in the month of November last. From the Philoso- 

 phical Transactions for 1 806 31 



V. Letter from a Correspondent, affirming, contrary to some observa- 

 tions in our last Number, that Objects can be distinguished by the 

 Human Eye under Water, with additional Experiments by the 

 Editor 39 



VI. History of the Dcvelopement of the Intellectual and Moral Con- 

 duct of an Infant during the first twelve Days of its Existence. In 

 a Letter from R. B 42 



yil. Repetition of the Experiment in which Acids and Alkali are pro- 

 duced m pure Water by Galvanism; (no Animal or Vegetable Matter 

 nor oxidable Metal being present). By Mr. Charles Sylvester. .50 



VIII. Experiments and Observations on the adhesion of the Particles 

 of Water to each other. By Benjamin, Count of Rumford, F. R. S. 

 &c. Communicated by the Author to the National Institute of 

 France, and transmitted by him to the Editor 5a 



IX. Experiments on the Culture of Carrots. By Mr. W. Wallis 

 Mason ^-y 



X. Extracts from a Collection of Papers on the subject of Athletic 

 Exercises. By Sir John Sinclair, Bart. M.P 67 



XL Scientific News: — Prize Questions by the Society of Goerlitz 77. 

 Questions respecting the Interior Temperature of the Earth, 78. 

 Ritter's Experiments on Galvanism and Magnetism, 78. — Prizes 

 offered by the Society for Encouragement of National Industry in 

 France, for sizing Paper, Vermillion, Block Engraving, Brick and 

 Tile Furnaces, &c , , 80 



