LAMPS.

155

ISINGLASS. Imported for home consumption in 1839, 1,644 cwts.: in 1840,1 >589 crvts. See Gelatine for excellent substitutes for isinglass in culinary operations.Were beer brewed by the Bavarian plan of fermentation, it would require no isinglassf °r fining it.

. IVORY. Imported of elephant’s teeth for home consumption in 1839, 3,929 cwts.;111 1840, 4,491 cwts. Duty Is.

K.

KILLAS. The name given by the Cornish miners to clay slate , commonly of aSfeenish color, in which the richest deposites of copper and tin occur.

L,

„ LAC DYE. Imported for home consumption in 1839, 532,881 pounds; in 1840,’44,092 pounds; 6s. per cwt. duty.

LACTIC ACID . See Fermentation.

LAMPS. The leading novelty under this title, is the construction of lamps for’'lining spirits of turpentine, in the place of the fat oils which alone have been in use’tom the most remote ages down to the present year. Two patents have recently beenobtained for these lamps, under the fantastic title of Camphine; one by Mr. Williamoung, an d another by Messrs. Rnvner and Carter, as the invention of a wprking«Uner—Roberts. Having been employed by the proprietors of these patents tofamine the performances of their respective lamps, I here insert the two reportsfawn up by me on these occasions :—

‘The Vesta lamp, burning with its utmost brilliancy, without smoke, emits a