Scientific News, Accounts of Books, (sfm, 335 



Beet Sugar and ardent Spirits. 



The National Inftitute of France having named a commiffion to repeat the experiment 

 of Achard on Beet Sugar, Citizen Deyeux has lately made their report, the refult of which 

 is, that the beft fugar can be afFordedat 15 fous per livre, or yd. per lb. avoirdupois. The 

 Inftitute therefore invites the Government to form an eftablilhment on a large fcale for 

 this important obje6l of economy. Mag. Encycl. An. VIII. torn. ii. p. 97. 



Brandy and arrack are made at Berlin from the refufe of the beet root. Both are highly 

 praifed, and the former is on fale in the market. 



Foiircrofs Synoptic Tables of Chemijiry, 



The method of exhibiting the whole of a fubjecl, with the relations of its parts to the 

 eye in tables, is of moft admirable life for the perfpicuity of communication, and its im- 

 prcffive effeft on the memory. It feems as if the caprice of fafliion, which during the 

 century nearly elapfed was inimical to every appearance of formality, had in a great mea- 

 fure fupprefled thefe valuable helps to learning. The Tableaux Synoptiques of Fourcroy 

 will be not only of the higheft fervice to the individual fcience of chemiftry, but may tend 

 to fhew the advantages of pofition and arrangement in other fciences, which greatly want 

 it. Thefe tables are printed on twelve large flieets, twenty-two inches by thirty, and 

 confequently with the misfortune of two folds in each. Every fheet contains one table, 

 and the author's arrangement is governed by the chemical properties of bodies. The firft 

 table contains the generalities of the fcience, its order, methods, hiftory, divifions, expli- 

 cation to medicine, &c. 2. The fecond prefents [a) the firft clafs of fimple, or unde- 

 compofed bodies, as light caloric, oxygen and azote, and others according to their order 

 of combuftibility, as hydrogen, carbon, fulphur, diamond, and the metals ; and {b) thefe bo- 

 dies burned or united to oxygen, or the feries of oxides or acids, clafled by their attraftions 

 to the principle of combnftion, and the difficulty of decompofing them. 3. The third ex- 

 hibits firft the falifiable bafes, namely earths and alkalis ; and fecondly, the firft clafles of 

 falts. 4, 5, the fourth and fifth tables are alfo employed in the claflification and defcription 

 of falts 6, 7, 8, 9, 10. The five following tables are engaged on the twenty one metallic 

 fubftances hitherto difcovered. 11, 12. and the eleventh and twelfth prefent Iketches of 

 the vegetable and chemical chemiftry. 



Thefe tables may be confidered as the fynopfis of the Syfleme general des ConnaiJJ'ances 

 chimiques of the author, now in the prefs, and after its appearance he will publifh a fuller 

 feries of tables on the fubjefts of the two laff. 



The prefent tables are on fale at De BofFe's, in Gerard Street, London. 



Note 



