Dec. 1, 1864] THE TECHNOLOGIST. 



FRENCH MACARONI. 209 



the melted mass, which is at the same time subjected to the influence of 

 sun light. Mr. Solly's is to treat the melted wax by a mixture of nitrate 

 of soda and sulplraric acid, when the nitric acid liberated oxidises and 

 destroys the colouring matters of the wax. Pure wax melts at 149°, 

 and, when treated with alcohol, is found to be composed of — 



Cerine or Cerotic acid... C 54 H 5S O a H 0... 65 



Myricine C 92 H 92 4 ... 30 



Ceroleine ... 5 



100 



Sir Benjamin Brodie, who examined most minutely the chemical com- 

 position of a great variety of waxes, considers that the substance called 

 by chemists cerine is really cerotic acid, and that myricine is a compound 

 of palmitic acid and melissine. The lecturer here illustrated and ex- 

 plained the various adulterations of wax, giving the means of detecting 

 them. The adulterations were common, owing to its value. 



Chinese Wax is a compact substance, imported from China and said 

 to be secreted by an insect called Coccus sinensis. This wax, which is 

 harder and more brittle than bee's wax, melts at 181°, and has yielded, 

 in the hand of the above eminent chemist, cerotic acid and cerotine, or 

 oxide of cerotyle. 



FRENCH MACARONI. 



BY J. BERNIS. 



Algerian products obtained an immense success at the International 

 Exhibition of Bayonne. From the day of the opening, crowds flocked 

 to the brilliant group where the riches of the African soil appeared in 

 all their splendour. 



The impression was profound and decisive, and the delegate of the 

 Minister of War, M. Teston, who had arranged with so much acknow- 

 ledged taste all these magnificent specimens, had good reason to be 

 satisfied with his labours. 



• It was, in effect, for the Algerian colonists and for the French 

 manufacturers who use their products, an indisputable triumph ; and 

 M. Teston hastened, as every chief of an army would do in such a case, 

 to address to his Excellency Marshal Randon a report dated from the 

 field of battle, even on the first day. 



One of our coadjutors ought to send you shortly a complete account 

 of the International Exhibition of Bayonne. While I regret not being 

 able to forward you such a detailed account, I believe I ought not to 

 defer submitting, for the appreciation of your readers, the following par- 



VOL. V. B B 



