The annual average value maybe put at not quite £2,000,000, machinery and tin-plate being a long way the most important items. There is further a small transit trade through Transcaucasia from Persia to the value of less than half a million sterling annually, and chiefly in carpets, cocoons and silk, wool, rice and boxwood; and further a sea-borne trade between Persia and Caucasian.
The slits may be cut out of tin-plate, and half covered by mica or " microscopic glass," held in position by a little cement.
There are, however, differences of treatment in detail, because copper is more malleable and softer than tin plate.
Bituminous coal and natural gas abound in the vicinity, and iron, steel, and tin and terne plate are extensively manufactured in the city, the tin-plate plant being one of the most important in the United States.
The companies very freely made returns to the commission, the only ones not doing so being the Broderers, Bowyers, Distillers, Glovers, Tin-Plate Workers and Weavers.
