CONTENTS. 



Vll 



V. Extraction of Sugar from Carrots, &c. Experiments on Barytes and Stron- 

 tites. Extract of a Letter from Mr. William Henry of Manhefter, to the 

 Editor, dated June 20th, 1799 - - - p. i68 



Procefles for obtaining fugar in confiderable quantity from carrots, anrf other vegetables. Experi- 

 ments on ftrontian and barytes. 



VI. Concerning thofc perpetual Motions which are producible in Machines, 

 by the Rife and Fall of the Barometer, or the thermometrical Variations of 

 the Dimenfions of Bodies. W. N. (Concluded from p. 128) ■^. I'jz 



Firft-movers deriving their power from the expanfion of compound bars, of metallic chains, of 

 catgut, &c. — Eftimates of the quantity of force accumul-ated by the barometrical and thermome- 

 trical contrivances before defcribed. 



Vir. Effays on the Art of Dyeing, by Means of the Solutions of Tin, and the 

 coloured Oxydes of that Metal. By J. M. Hauflrnan - P- ' 75 



Soliitions of tin in various acids, mixed with decoftions of vegetable colouring matters afford com- 

 binations of the oxyde with thofe colours ; which may ferve as pigments, or be fixed on piece- 

 goods. Variations of the proceffes and effefts. Conditions and manipulations defcribed and enu- 

 merated. 



VIII. Obfervatipns on the Manners, Habits, and Natural Hiftory of the 

 Elephant. By John Corfe, Efq. - - p. 181 



Incorred relations concerning the elephant • his fentiments of modefty, flavery, &c. Size and 

 growth. Extreme fize. What may be his jeal degree of fagacity. 



Philofophical News and Accounts of Books, &c. - - ' p. 185 



Chladni's experiments on the refonant .figures on glafs. Philofophical tranfaftions. Bcrthoud oa 

 timcipieces. 



AUGUST 1739. 



Engravings of the following Gbjeds : i. Regnier's new Powder-Proof. 2. A 

 new Pendulum,, and three. Figuces illuflratlve of the Refiexibility of Light. 



I. Supplement t©' the.Paper. on the philofophical Ufes of a common Watch, By 

 the Rev. W. Pearfon of Lincoln - - . igo 



Additional numbers for watch trains. Remarks on the clock with a (hort pendulum, &c. 



IL Obfervations on the Manners, Habits, and Natural Hiftory of the Elephant. 

 (Continued from page 185) - . _ p. iqa 



Narrative of incidents, which (hew that the elephant is not fo fagacious bat that he may be retaken 

 after having made his efcape. It is a millake to alTett that this aniraal will not breed in a domeftic 

 ftate. Fads which prove to the contrary. 



III. Defcription and Ufe of a portable Inftrument for comparing the Force of 

 Gunpowder. By Cit. Regnier ... p. jgg 



The 



