Chemistry and Chemical Arts. 121 
mony to the house appropriated for the celebration. Having enter- 
ed, they begin to sing. At this signal, all the other male performers 
repair to the same place and array themselves upon one side of the 
building. Next come the female part of the choir, to whom the 
opposite side is assigned. ‘The whole island now assembles, men, 
women and children. The men open the concert in which the fe- 
males gradually unite. At the commencement all are seated, but 
they soon rise to join in the dance. The entertainment lasts for 
three or four hours, when the females withdraw, after which the 
men prolong the féte; and do not quit the house until they have 
partaken of the best refreshments the island is capable of affording. 
Besides these great entertainments, which require so much prepara- 
tion, the islanders often assemble in small collections to sing and 
dance, especially during the summer months, when there is the great- 
est abundance of fish. 
Arr. XIL—Miscellanies.*—Recent discoveries in Chemistry and 
the Chemical Arts. 
Translated and abridged from Foreign Journals; by C. U. Sueparp. - 
1. Two Organic Acids in mineral waters.—2. Memoir on Tannin.—3. For- 
mic Acid.—4. Phosphoviniec Acid.—5. New compounds of Platina —6. Transform- 
ation of vegetable substances into a new principle —7. Créosote—8. Method of 
determining nitrogen in organic compounds.—9. Oxide of iron an antidote for 
arsenic acid—10. Titanium one of the constituents in primitive rocks —I1. Vol- 
atibility of Titanium.—l2. Preparation of Iodic acid —13. To obtain mangane- 
siate of Potash.—14. Memoir on Tellurium.—t5. Hydrate of Phosphorus.—16. 
Phosphuret of Nitrogen.—17. Hyper-iodic acid.—18. Boracic acid of 'Tuscany.— 
19. Manufacture of carbonate of soda.—20. Preparation of artificial Ultra-ma- 
rine.—21. Cementation-copper in Spain.—22. Roasting of copper ores.—23. Re- 
duction of chloride of silver.—24. Preparation of the Purple of Cassius for stain- 
ing glass —25. New method of producing beat—26. Method of assaying man- 
ganese ores.—27. New method of preparing Zaffre—28. Gas lights—29. A new 
green Pigment for artists—30. Improvement in the manufacture of sealing wax. 
—3l1. Filtration —32. Purification of water. 
1. Two Organic Acids in Mineral Waters, by Bnurzeuius. 
(Ann. de Ch., t. 54, p. 219.)—Berzexius has found in the water 
of Porla, two electro-negative organic principles to which he has 
given the name of crenic acid (from xpnvn, source) and to the other 
* Inserted thus early that they may not be excluded by the pressure of regular 
articles.— Ed. 
Vol. XX VIII.—No. 1. 16 
