Other drum forms are shown in the illustration (p. 151) and the same slight variations appear in trade differentiations in this copper-plate catalogue of examples ready for export. Some of these, it will be noticed, have flat lids and one example has the dome-shaped lid of the flagon of earlier days. The tall urn-form offers another variety of shape. It is here shown in the engraved examples and it is further exemplified in two fine examples in date 1785 and 1790, illustrated (p. 149). In the left hand specimen the pierced work exhibits an originality and beauty in its curved perforations. The other mustard pot has pierced star ornament and delicate beaded decoration, on body and handle. In regard to the handles of these urn mustard pots there is a departure from exact classic countour. The illustration (p. 151) shows the handles in fine curve, but severely classic. The practical examples have lost this severity, the handles are more the handles of the working silversmith than the designs of the drawing master. In regard to Sheraton's design books there are similar differences. The practical craftsman did not always live up to the ideal of the designer. A page of mustard pots illustrated (p. 155) shows the diversity of the styles, and collectors can compare their Sheffield plate not only with marked examples of silver but with designs that were issued from Sheffield in the series of Pattern Books which happily have not been destroyed. A page of pepper castors illustrated (p. 155) shows similar inventiveness in design and ornament. [Illustration: GROUP OF OLD SHEFFIELD PLATED PEPPER CASTORS. (_In the collection of B. B. Harrison, Esq._)] [Illustration: GROUP OF OLD SHEFFIELD PLATED MUSTARD POTS. (_In the collection of B. B. Harrison, Esq._)]