DUBLIN. Royal Dublin Society, June 28.—J. Reilly and G. Pyne: A modified micro-method for the determination of molecular weights. This depends on the alterations in the cooling curve of pure camphor produced by minute amounts of dissolved substances. The method is particularly useful for substances the low solubility of which in camphor, or their high molecular weight, precludes the use of the ordinary Rast method.—J. Wilson: Lord Morton's quaggahorse hybrid. Was it a hybrid?