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Proceedings of the Royal Institution. 289 
cations in the art of Tanning—Compositions of writing and printing 
ink—Of the colouring matter of vegetables—Of colour-making— 
Dyeing—Methods of conferring permanence upon vegetable colours 
—Outline of the art of calico-printing—Of the newly discovered sali- 
fiable bases—Cinchonia—Quinia—Morphia, &c, 
Lecture IV. Saturday, May 29. 
Of the theory of Fermentation and the production of beer and wine 
—Components of wort and of must.—Change of sugar, mucilage and 
starch into alcohol—Conversion of beer and wine into vinegar— 
Properties of acetic acid—Of the different quantities of alcohol con- 
tained in various fermented liquors, and of the state in which it exists 
in them—Of the properties and composition of pure alcohol— Action 
of acids upon alcohol— Preparation, properties, and composition of 
sulphuric ether—General views connected with this department of 
Chemistry—Conclusion of the Course. 
On Saturday the 1st of May, the General Annual Meeting for the 
election of a President, and the other Officers, was held at the House 
of the Institution, when 
The Right Hon. Ear Spencer, K.G. F.R.S. F.AS., &c., was elected 
President. 
Treasurer, Sir Scrope Bernard Morland, Bart,, M.P. LL.D. 
Secretary, John Guillemard, Esq., F.R.S. 
MANAGERS. 
Baker, Sir Frederick, Bart., F.R.S. 
Chamier, John, Esq. 
Daniell, Edmund Robert, Esq. 
Davy, Sir H. Bart., LL.D. P.R.S. V.P. 
Duckett, Sir George, Bart., F.R.S. and F.S.A. V.P. 
Hallam, Henry, Esq. 
Hatchett, Charles, Esq., F.R.S. and F.S.A. V.P. 
Lansdowne, Marquis of, LL.D. and F.R.S. V.P. 
Moore, Daniel, Esq:, F.R.S. F.S.A, and F.L.S. VP. 
