A recent report on coke and its value, concludes as follows : First, the size of coke used should be a size smaller than that of anthracite for the same purpose. Second, fires should be made deep and broad, and after coke catches, all drafts should be checked; at night entirely, in most cases. Care must always be taken to keep the supply of coke large, as fire will not be held except in deep bodies of coke. Third, the ashes from coke are a white powder, and free from clinkers, those from coke should contain no slate or waste. - Virginias.