These two factories continued as rivals until 1840, when they amalgamated, and the two firms formed one company. The name of Flight and Barr disappears, and the business being carried on at Messrs. Chamberlain’s premises, the new Worcester mark became “Chamberlain & Co.” In 1850 Mr. W. H. Kerr joined the company, and for a little while the firm was known as “Chamberlain, Lilley, & Kerr.” In 1852 another change took place, Mr. Chamberlain and Mr. Lilley retired, and Mr. R. W. Binns entered into partnership with Mr. Kerr. From that time the manufactory, under the management of Kerr & Binns was known as “W. H. Kerr & Co.” It is important that the collector should know all these transitions in the ownership and management of the Worcester works, which has a continuous history of nearly a hundred and fifty years, a record not reached by any other English factory. Besides the above-mentioned two main streams of Worcester porcelain manufacture, there is yet another firm which was established in 1800 by Thomas Grainger, nephew to Mr. Chamberlain. The firm became Grainger, Lee & Co., and afterwards G. Grainger & Co. We give their marks, together with the other Worcester marks, to enable our readers to identify any specimens they may possess. One of the marks in the Kerr & Binns period requires explanation. The circle with the letter W radiating from the centre was especially designed for solely marking the productions of the factory made for the use of Queen Victoria and the Royal household. The scent-bottle which we give as illustration has double sides, the outer being ornamented with perforated work, painted and gilt. The neck is beautifully decorated with flowers on a yellow ground. It is marked “Chamberlain’s Worcester.” It is an elegant piece, and very characteristically shows, for instance, in the double sides and perforated work, the influence of Chinese models. This specimen is at the Victoria and Albert Museum. [Illustration: SCENT-BOTTLE. CHAMBERLAIN-WORCESTER. _In Victoria and Albert Museum._] A set of three vases (15-1/2 in. high), marked “Grainger, Lee, & Co., Worcester,” have views on them of Camden Place, Bath, Redcliffe Church, Bristol, and St. Vincent’s Rock, Bristol. [Illustration: SET OF WORCESTER VASES. Grainger & Co. Early Nineteenth Century. _Left._ Bath, Camden Place. _Centre._ Redcliffe Church, Bristol. _Right._ Bristol, St. Vincent Rock. (Marked in script, Grainger, Lee and Co., Worcester, with titles also in script.)]