But that this step will be greatly aided by any material change in the marine steam engine in the very near future is not probable, the difficulty is now not with the engine but with the boiler; forced draught and the higher pressures call imperatively for a new development in the steam producer; leaky tubes and joints and a rapid deterioration through the effort to keep up the high pressures necessary for the successful performance of the new type of engine are the shortcomings which must be successfully combated before we can make another great advance. Unfortunately there is another draw-back, for which the remedy will be even more difficult, the suffering of the firemen induced by the greater heat of the higher pressures. Let us hope that genius will yet invent a mechanical stoker and that we may not of necessity subject our fellow-beings to the 140° too frequently found in our modern fire-rooms. We may fitly place here a tabulation of the very wonderful achievements of the ships first mentioned, based on official data in _Engineering_ of June 19 and July 10, 1891, and covering, in the case of the Liverpool ships, the season of 1890, except for the City of Paris, which is for 1889. (See table on p. 45.) The coal consumption is also officially stated by the journal from which the above is compiled as follows: The City of New York, 328 tons: Teutonic, 316 tons: Etruria, 330 tons. This shows an actual expenditure of about 1.6 lb. per hour in the case of the Teutonic: slightly greater for the City of New York, and over 1.9 for the Etruria. But in the month of August, 1891, both the Teutonic and Majestic won still greater laurels, the latter crossing from Queenstown to New York in 5 days 18 hours and 8 minutes; the former in 5 days 16 hours and 31 minutes, and averaging for the run of 2,778 miles 20.35 knots per hour, the best day’s run being 517 knots. _Fastest Passages of the more Important Steamers between New York and English Ports during the Season of 1890._[5]