f^ 2^eiv Puhlicaiions. 



duflofy lioofc$ on morals, poHtical economy, or the more confined fciences of mechanic?, 

 chemiftry, or aftronomy. The facility and accuracy of enunciation, the fpeed and brevity 

 of defcription, "and the extreme rapidity of perufa!, would foon realize thofe expefta- 

 tions upon which our author and a few men of refle£tion now meditate as the objeds 

 of enjoyment deftined for remote future ages. The Doftor has not entered into the parti- 

 culars of his own fcheme ; and the prefent occafion xloes not admit of a detail of the multi- ' 

 plied means and advantages which prefent themfelves fn the contemplation of this intereft-' 

 ing fubjeft. From the date of his letter, it is to be feared that other avocations may have 

 fufpended this purfuit, as well on his own pa^t as that of his able friend whom he men- 

 tions as being aiSlively engaged in it. — 7. The Inverfe Method of Central Forces. Commu- 

 nicated by Dr. Holme.— 8. Obfervations on Iron and Steel. By Jofeph Collier. After a 

 - concife account of the methods of fmelting and refining iron, a defcription is given of 

 the manufacture of fteel by cemeiitation,- with a good drawing exhibiting the plan and fee- '■ 

 tion of a furnace for performing this operation. I do not recoliedl: meeting with a draw- • 

 ing of this kind in any Englifli author. Mr. Collier's paper exhibits a fummary of the ■ 

 mofl effential fa£ls related by Reaumur, Duhamel, Vandermonde, Monge, and Berthollet, ■ 

 and others*.— 9. Remarks on Dr. Prieflley's Experiments and Obfervations relating to the . 

 Analyfis of Atmofpherical Air, and his Confiderations on the Dodirine of Phlogifton and the 

 Decompofition of Water. By Theophilus Lewis Rupp. The modern chemiftry which re- 

 jefts phlogifton is ably defended in this paper, of which, from the clofe method of quotation 

 and remark according to which it is written, it is impoffible to give any fair account in this 

 place. — 10. An Accountof three different Kinds of Timber Trees, which are likely to prove 

 a great Acquifition to this Kingdom, both in point of Profit, and as Trees for Ornament 

 and Shade. By Charles White, Efq. F.R.S. The trees are the black American birch with 

 broad leaves, the Athenian poplar, and the iron oak with prickly cups. For the minute 

 particulars of defcription, as well as the perfpicuous detail of advantages, recourfe muft be 

 had to the paper itfelf. — 1 1. An Analyfis of the Waters of two Mineral Springs at Leming- , 

 ton Priors, near Warwick, including Experiments tending to elucidate the Origin of the 

 ^luriatic Acid. By William Lambe, M. A. late Fellow of St. John's College, Cam- 

 bridge.— 12. Some Account of the Perfian Cotton Tree. By Matthew Guthrie, M.D. 

 F.R.S. &c. — 13. Experiments and Obfervations on the Preparation and fome re- 

 markable Properties of the Oxygenated Muriate of Potafh. By Thomas Hoyle, jun.— . 

 14. Experiments and Obfervations on Fermentation and the Diftillation of Ardent Spirit. 

 By Jofeph Collier. On the chemical papers laft mentioned, as well as the fubfequent paper on 

 bleaching, I make no remarks, not only for the fake of brevity, but becaufe I hope on a future 

 occafion to give a more ampleaccount of their contents. — 15. Hints on the Eftabliftimentof 

 an Univerfal Written Charafter. By William Brown, M.D. Notwithftanding the great value , 

 of this paper, and the ability of its author, who has occafionally turned his thoughts during 

 three years to Dr. Anderfon's projeif, I cannot help wiftiing that he may not be the friend 

 to whom that author refers. His hints contain an outline of the procefs by which an univer- 

 fal written charader is to be eftablifhcd j but he feems rather difpofed to confider the pro- 



• The author mentions certain omiffions in my Chemical Diftionary, article Iron, which he would have 

 found under the word Steel, if he had turned te that article; 



jea 



