4 JUNE 1831, Page 20

We were prevented from availing ourselves of Mr. Raemersoses invi-

tation to attend his lecture at the Royal Institution, on the evening of Friday week ; but we shall be glad to examine, by daylight, the effect of the improved vehicle for pigments which Mr. ROBERTSON'S ingenuity has brought forward. A union of the advantages of oil and water colours, without their deficiencies, is a desideratum which, if only in a measure supplied by this invention, entitles the discoverer to the thanks of every artist.