26 JANUARY 1850, Page 9

Sugar-refining formed the subject of a lecture yesterday evening at

the Royal Institution, Albemarle Street, by Professor Brande. The leading points were, that a considerable saving in quantity is effected by the use of what is called the "vacuum" pan in boiling ; next, that the use of an oxide of lead as a purifying and discolouring substance was rendered per- fectly safe by Dr. Scoffern's process for getting rid of the lead after it had done its work.