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Nicholson, William. 25. An account of some 

 experiments made by Mr. John CUTHBERTSON, 

 with a view to iletermine an unequivocal method 

 of ascertaining the power of electrical machines. 

 Nicholson, Journ. II., 1799, pp. 215-219 ; Gil- 

 bert, Annal. III., 1800, pp. 25-34. 



26. Accounts of the discovery of native 

 Gold in Ireland. Nicholson, Journ. II., 1799, 

 pp. 223-227. 



27. An account of the principles and 

 effects of Steam Engines, which act by means 

 of a piston ; with descriptions of the atmo- 

 spherical Engine of NEWCOMEN and CAWLET ; 

 the engine of WATT which works in vacua ; and 

 a new engine by Mr. SADLER, in which the 

 direct action of steam and the pressures of the 

 atmosphere are combined. Nicholson, Journ. 

 II. 1799, pp. 228-233 ; Gilbert, Annal. XVI., 

 1804, pp. 336-355. 



28. On the supposed improvements of 



achromatic lenses, when rendered more trans- 

 parent by cementing them together. Nicholson, 

 Journ. II., 1799, pp. 233-234; Gilbert, Annal. 

 VL, 1800, pp. 151-155. 



29. Observations on metallic money, chiefly 



directed to ascertain the most advantageous 

 distribution and figure of gold, silver, and cop- 

 per in coins. Nicholson, Journ. II., 1799, pp. 

 260-265. 



3O. The progress of mechanical discovery, 



exemplified in an account of a machine for 

 cutting Files. Nicholson, Journ. II., 1799, pp. 

 309-311. 



31. Experiments and remarks on certain 



ranges of colours hitherto unobserved, which 

 are produced by the relative position of plane 

 glasses with regard to each other. Nicholson, 

 Journ. II., 1799, pp. 312-315. 



32. Invention for rendering the pistons of 



steam engines, pumps, and other hydraulic appa- 

 ratus tight by metallic parts, without packing or 

 leathering. Nicholson, Journ. II., 1799, pp. 

 364-367. 



- 33. An account of electrical machines of 

 considerable power, in which silk is used instead 

 of glass. Nicholson, Journ. II., 1799, pp. 420- 

 422 ; Gilbert, Annal. XXIII., 1806, pp. 308- 

 312. 



34. Description of a new instrument for 



drawing equidistant and other parallel lines with 

 great accuracy and expedition. Nicholson, 

 Journ., II., 1799, pp. 429-431. 

 35. Experiments and observations on elec- 

 tricity ; excitation the two states points of 

 difference between the action of weak and strong 

 electricities compared together. Nicholson, 

 Journ. II., 1799, pp. 438-441 ; Gilbert, Annal. 

 XXIII., 1806, p. 289. 



Nicholson, William. 36. Enquiry respecting 

 the proper form of a boiler for steam-engines. 

 Nicholson, Journ. III., 1800, pp. 86-88. 



37. Concerning those perpetual motions 



which are producible in machines, by the rise 

 and fall of the Barometer or the Thermometrical 

 variations in the dimensions of bodies. Nichol- 

 son, Journ. III., 1800, pp. 126-128, 172-175. 



38. Description of a new arrangement of 



the bars in the Gridiron Pendulum. Nicholson, 

 Journ. III., 1800, pp. 205-207. 



39. Description of the Hydrostatic lamp of 



Peter KEIR. Nicholson, Journ. III., 1800, pp. 

 467-470; Gilbert, Annal. VI., 1800, pp. 96- 

 100. 



40. On the hydraulic machine erected at 

 the mines of Schemnitz in Hungary. Nichol- 

 son, Journ. IV., 1801, pp. 18-21. 



41. Description of the Revolving Doubler. 

 Nicholson, Journ. IV., 1801, pp. 95-96. 



42. On the fetid gas of Drains. Nichol- 

 son, Journ. IV., 1801, pp. 135-137. 



43. Account of the new electrical or gal- 



vanic apparatus of Sig. Alex. VOLTA, and ex- 

 periments performed with the same. Nicholson, 



jVn- IV., 1801, pp. 179-187 ; Gilbert, Annal. 



VL, 1800, pp. 340-359. 

 44. Experiments on the conducting power 



of fluids with regard to heat. Nicholson, Journ 



V., 1802, pp. 197-200. 



45. A statement of the experiments made 



by the Rev. Abraham BENNET on the electricity 

 produced by the contact of metals previous to 

 the year 1789, and also of those made by Mr. 

 Tib. CAVALLO, previous to the year 1795. 

 Nicholson, Journ. I., 1802, pp. 184-191 ; Gilbert, 

 Annal. XVII., 1804, pp 428-440. 



46. Description of an apparatus for heating 



water by waste steam, invented by Mr. Arthur 

 WOOLP. Nicholson, Journ. H., 1802, pp. 203- 

 204 ; Gilbert, Annal. XIII., 1803, pp. 395- 

 398. 



47. Note respecting the instruments by 



which the two kinds of electricity are dis- 

 tinguished or its direction ascertained. Nichol- 

 son, Journ. III., 1802, pp. 121-123; Gilbert, 

 Annal. XXIII., 1806, pp. 421-425. 



48. Description of a joint applied to tubes 



used for conveying steam under considerable 

 pressure. Nicholson, Journ. IV., 1803, pp. 

 107-109. 



49. Description of a Magazine Pistol, which, 



when loaded, is capable of being discharged nine 

 successive times through the same barrel. 

 Nicholson, Journ. IV., 1803, pp. 250-253. 



50. Account of two Musquets of peculiar 



construction for the purpose of quick firing. 

 Nicholson, Journ. V., 1803, pp. 116-120. 



4 H 2 



