I N D E X 



TO THE 



FOURTH VOLUME. 



A. 



X1.BERNETHY, Mr. 174 

 Abildgaard, 520 

 Abich, 515 



Abforbent Powers of different Earths, Re- 

 marks on, 196 

 Account of a Work, entitled, «« The Ob- 

 fervations of Newton concerning the In-, 

 fleftions of Light," &c. by a Corre- 

 fpondent, 78 



Accura, Mr. F. on the Art of Etching on 

 Glafs, 1. On Drugs and Medicines, 

 33, 159 



Achard's Procefs for making Beet Sugr.r, 

 28 



Acid, cobaltic, 37 



Acid, muriatic. Experiments with a View 

 to decompofe, 209, 245, 374. On the 

 Formation of, 377 



Acid, fulphuric, Method of obtaining from 

 the Refidue of Sulphuric Ether, 354 



Adams, 165, 265 



Agricola, 3 



Air, Produftion of, by freezing Water, 

 193 



Air-pumps, new, by Mr. Auguftus Clare, 

 264 



Aldine, 121 



Alcohol, mixtures of, fee Artometty, and 

 Table. 



Alkali, the fixed, Account of its Decom- 

 pofition, by Van Mons, 334 



Alkali, Difovery of a new, 523 



Alkali of Sea Salt extraaed by Lime, 382 



Alkalis, their Purity, 33 



Alkalis, their Effefts in Alum, 49 



Alkalis, Method of purifying from Sul- 

 phate of Pot-a(h, 171 



Alum, Effiea of Alkalis in, 49 



Ameilon, 173, 204 



Ammonia, new Produflion of, 522 



Ammoniurets, 36 



Animal Flefti, Remarks on, 337 



Animal Fluids, their Effefts on fponta- 

 neous Light, 459 



Animation, fufpended, Inftances of in Ve- 

 getables, 509 



Antimony, on the Golden Sulphur of, 

 382 



Antimony, on the Oxigenation of its Oxide, 

 S25 



■ Vol. IV.— March 1801. *■ 



Apparatus of Woulfe Improved, 41 



Apparatus for making the Hydraulic En- 

 gine at Schemnitz work itfelf, by Mr. 

 J. W. Bofwell, 117 



Apparatus, Galvanic, of Sig. Volta, Ex- 

 periments with, 179 



Apparatus for teaching the firft Principles 

 of Mechanics, 443 



Areometers, Table of Comparifon for, 429 



Areometry, Remarks on, as it relates to 

 Alcohol, of different Strengths and Tem- 

 peratures, 428 



Arrack and Brandy made from the Refufe 

 of the Beet Root, 335 



Arragonite of Werner, Memoirs on, 367 



Arfenic, its Acid compared with the Co- 

 baltic, 38, 40 



Art of Hat-making, Letter on, 236 



Aftronomy, Prize of, propoled by the Board 

 of Longitude, in France, 329 



Atmofpherical Refraftion, on double Images 

 caufed by, 298 



Attraftion and Repulfion, Theory of Elec- 

 tric, 461 



Azote, Girtanner's Memoir on, 137, 167, 

 268 



Azote, Remarks on the Memoir of Gir- 

 tanner, relative to that Fluid, 37 1 



B. 



Babington, 5 1 1 



Baillet's Defcription of a new Inftrument for 

 repeating the Examination of Strata 

 which have been penetrated by the com- 

 mon boring Inftrument, 227 



Banks, 179, 289, 506 

 Baker, 509 



Barker, 11, 107 



Bartram, 74 



Baume, 177 



Bayen, 173 



Beale, 424 



Beckman, 1 



Beddocs, 43, 61 



Bcddoes, Dr. on the Experiments made at 

 the Royal Inftitution,withNitrou$ Oxide, 

 75 



Beet Root, Procefs for extrafting its Sugar, 

 28 



Beet Sugar and Ardent Spirits, Experi- 

 ments with, 335 



Bennet, 95 

 Bergman, 3, 49, 52 

 BerthoUet, 137, 173 



Berthollet's ObCervations on the Afllon of 



the Sulphate of Tron upon Nitrous Gas, 



and on ths Formation of Muriatic Acidy 



377 



BerthoUet, Etidiometric Obfervations by, 



314 

 Bertholitt, his Remarks on the Memoir' of 



Girtanner, relative to Azote, 371 

 BerthoUet on the Solutions and Precipitates 



of Mercury, 405 

 Beryl of Georgen-Stadt, a new Earth dif- 



covered in, 383 

 Bcflbn, 98 



Bile, fee Animal Fluids. 

 Blaft Furnaces, praftical Remarks on the 



Management of, 110 

 Blaft Ventilator of Mr. Bofwell, 4 

 Bleaching, a new Method of, defcribed, 



469 

 Blood, fee Animal Fluids. 

 Board of Agriculture, Account Of the Pre- 

 miums offered by, 476 

 Bodies, organifed, on the Light emitted 



from, 421, 451 

 Bodies, on the conducing Power of, 530 

 Body, the Human, its Effefts on i^onta- 



neous Light, 459 » 



Bolognian Phofphorus, Note on, 336 

 Bones of a certain Animal, difcovered by 



T. Jefferfon, Efq. 66 

 Bonnycaftle, 120 

 Born, 223, 367 



Bofwell, Mr. 12. His Blaft Ventilator, 4. 

 His Apparatus for making the Engine ait 

 Schemnitz work itfelf, 117 

 Bouguer, 501 



Bouguer, his Traite ttOpligue recommend- 

 ed, 350 

 Bouillon La Grange, 372 

 Bounion, 220 

 Boyle, -124 

 Breidack, 63 

 Breflawer, 1 

 Bridgewiiter, Duke of, his underground 



inclined Plane, dcfcribcd, 486 

 Brugnatelli, 120, 173 

 Briignatelli on Cobalt and a new Acid in 



ZafFre, 36 

 Biugnatelli's Method of feparating Butter 

 from Cream, 334 



4 C Buclwlz, 



