iS8 AGllICULTUJtAL MUSEUM 



M. Guytjii has directed his attention to the mode of 

 giving a pecmanent red colour to glass, by means of cop- 

 j)er, which by accident he first discovered might be donc> 

 JM. Sage has also taken a part in these experiments, with 

 the intent to colour glass red by means of copper and 

 the phosphate of lime, or with bones ; and he has shewn 

 crystals of glass, from the by^ttoni of the pots used to 

 melt glass, in the bottle manufacture at Seves, whieh had 

 some resemblance to hexoedial prisms. It is well known 

 that simple means have been discovered to extract soda 

 from common salt. France formerly imported this arti- 

 cle, so necessary to the arts ; an inconvenience attended 

 the mode af preparing it, from the quantity of acid gas 

 which escaped, and was highly injurious, Ainongst the 

 different means of preventing this inconvenience, which 

 have been attempted, that of M. Pelletan the younger, i« 

 deserving of notice. It consists in making the muiiatic 

 acid gas pass through long horizontal tubes, partly tilled 

 vrith calcareous earth, which absorbs the gas, firming 

 with it the muriate of lime: The experiments of M. 

 Sage on plumbago, (black lead,) show that this substance 

 docs not contain any iron.; but consists of coaly matter 

 mixed with one-tenth part of clay. The fossil carbon of 

 St. Symphorien, near Ljons, ajjproachcs nearer to thi^ 

 substance, than any other known mincraL 



M. Devcaux has presented to the class of agriculture, 

 a loaf of sugar, made from the red beet (betterave), 

 which had all the whiteness and t^iavour of sugar from- 

 the cane, lie has announced, that this substance may be 

 made in great quantities by the proprietors, who have 

 devoted to this attempt 400 acres of ground. Should it- 

 succeed on the great scale, it will change the relations 

 of the two worlds. 



PrvINTi:D FOR AND PUBLISHED BY DAVID WILEY. 



Pme 4^' 2.50 for twenty four Numbers, 

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