V ashy on Heaf, Tlame, and Comlustlon. bj 



kiiowii oiilv l>v the iiecesbity of matter existing externally, in 

 order to produce those mental effects which are all that hunirji ■ 

 knowledge consists in. — Ideas only heing perceived, no argu- 

 ment in favour of the non-existence of matter. — All the senses 

 excited by the same elementary causes. — No more elements in 

 Nature, than the sum of simple ideas, which a single sense 

 is accessory to the formation of. — Heat not a property of mat- 

 ter, but state of the mind. — Flame the only heat-exciting cause 

 in Nature. — All ponderable bodies whatever contain flame as 

 their gravitating base, — The animal body contains the heat- 

 making cause within it. — Flame attracts elements from bodies, 

 but communicates none. — Ignition, the state of a body the 

 gravitating base of which is unsaturated with imponderable ele- 

 mentary matter. — The attractive power of the flame of fire, that 

 which renders bodies unsaturated, and prepares 'them for the 

 decomposing process of combustion, by means of oxygen gas.— i 

 CoTVibustion, the act of giving out the internal flame of decom- 

 posable bodies. — Carbon, the necessary consequence of the car- 

 bor of the combustible when set free, uniting with some one 

 peculiar chemical imponderable element. — Heating a body, the 

 act of rendering its gravitating base deficient of elementary mat- 

 ter ; and cooling, that of recovering the deficiency. — Radiation 

 the act of flame, or a body in deficient state depriving the sur- 

 rounding medium of elementary matter. — Expansion, the result 

 of elementary matter occupying a larger space in a body when 

 the opposite kind of elementary matter is attracted from it by 

 flame, or the carbor of fire." 



Notes on Rio de Janeiro, and the Southern Parts of Brasil, 

 taken during a residence of ten years in various parts of that 

 country; embracing agriculture, commerce, and mines; with 

 anecdotes illustrative of the character, manners and customs of 

 the inhabitants. By Mr. John Luccock. 



A Tour in Normandy, undertaken chiefly for the purpose of in- 

 Yestigating its architectural Antiquities, illustrated with numerous 

 Engravings. By Dawson Turner, Esq. F.R.S. &c. 2 vols, royal 

 8vo. . 



A Series of Engravings from Drawings made in Savoy, Switzer- 

 land, and on the Rhine; accompanied with descriptive Letter- 

 press. By John Dennis, Esq. 



Narrative of a Chinese Embassy from the Emperor of China, 

 Kang Hy, to the Khan of the Tourgouth Tartars seated on the 

 Banks of the Volga, in the years 1/12, 1713 and 1714, published 

 atPekin by the Emperor's authority. Translated from the Chinese 

 by Sir George Thomas Staunton, Bart. LL.D, F.R.S. 



Vol. 5C. No. 267. Juhj 1 820. H Prac- 



