November 19, 1916. THE COLLIERY GUARDIAN. 1035 have been active. The general tone has become stronger, and prices have advanced. A brisk state of affairs is to be found throughout Lancashire and Derbyshire. The supply has been quite inadequate to meet the heavy enquiry. The Yorkshire markets are much in the same position; buyers here also find the greatest difficulty in obtaining sufficient supplies. At Cardiff matters have gone from bad to worse, the stormy weather having delayed tonnage, the shortness of which was already acute. In the circumstances it is not surprising that stocks are accumulating on the sidings, and more pits have been idle. Shipment of best Admiralty coal is now permitted. Prices are nominal. Little change of note has taken place in the Scottish coal trade, which on the whole is fairly brisk. The executive of the Miners’ Federation of Great Britain met Lord Derby on Wednesday and raised objection to the recruiting notice recently issued by the Home Office. His lordship explained that miners who enlisted and returned to work would in no way lose their civil rights The executive yesterday interviewed the Home Secretary on the matter, and the latter promised to give it his consideration. A meeting of London coal merchants on Wednes- day decided to adopt the prices set forth in the scheme recently issued in the Board of Trade circular for limiting retail prices of coal. Mr. R. Smillie, on Wednesday, at a meeting of the Miners’ Federation, announced that experiments were being conducted, by a Home Office committee, on the use of stone dust to prevent coal dust explo- sions. A report on the subject, he stated, was presented to the committee last week by Dr. Haldane. Lord Coleridge, the independent chairman of the Coal Conciliation Board for the Federated area, referred back to the Board the application of the miners for a 5 per cent, wage increase. The advance was agreed to by the Board yesterday. Mr. Brace, Under-Secretary of the Home Depart- ment has stated that the Government is determined to deal with freights and tonnage so as to lower food prices and regulate coal supplies. Prof. W. A. Bone gave an address on the impor- tance of fuel economy before a meeting of the North Staffordshire Institute of Mining and Mechanical Engineers on Tuesday. An important judgment affecting the respective responsibilities of colliery manager and under- manager has been given in the Hamilton Court by Sheriff Shennan. Judgment has now been given in the Lancashire Chancery Court in the case of Heyes v. Bromilow, Foster and Company Limited, which raised an important question as to subsidence due to colliery workings. An interesting discussion, on the use of gas producers at collieries for obtaining power and by-products from unsaleable fuel, took place at a meeting of the Midland Institute of Mining, Civil and Mechanical Engineers, on Tuesday. Lord St. Aldwyn, independent chairman of the South Wales Conciliation Board, has granted the owners’ application for a 5 per cent, reduction in wages. On Monday next Sir G. Askwith will act as inde- pendent chairman to the Scottish Coal Conciliation Board, to decide the miners’ claim for increase in wages of 18f per cent, on the 1888 basis. That the home export coal trade Coal Exports, should find itself somewhat out of at Home joint on account of the war was, of and Abroad, course, inevitable. But few would perhaps have realised how wide- spread is the disorganisation, even in countries far removed from the seat of active hostilities. This is forcibly illustrated by the present conditions pre- vailing in remote Australia. Thus, in the case of the Scottish Australian Mining Company, whose half-yearly meeting was held last week, it is stated that profits have fallen from Is. 3d. per ton to below zero, the collieries having experienced since the war period a loss of about 5d. per ton. This is attributed mainly to restricted tonnage and high freights, and the loss would probably have been greater but for the increased home consumption caused by the extension of manufactures of war material in Australia. By way of contrast, let us now examine the position of Germany. That country has normally a large export trade, amounting to nearly 25 per cent, of her total production. Germany, in fact, ranks as the fourth coal-exporting country of the world, being only surpassed by Great Britain, exporting about 33 per cent., Belgium nearly 32 per cent., and Australia about an equal proportion of the total output. To Germany, therefore, coal exports are in times of peace a highly valuable source of profit. The bulk of this trade is overland to France, Austria, Switzerland, Holland, and other European countries. At the present time a large proportion of thisjtrade is in abeyance from various causes, some of which are less obvious than others. It is instructive to examine one of these in greater detail. Switzer- land relies almost entirely upon German coal for industrial purposes, and Germany, with her characteristic thoroughness in subordinating every interest to the war, is said to be refusing to supply coal to the Swiss factories. It is reported that forty-two of these factories, including chiefly aniline dye and cement works, have thus been cut off from further coal supplies, ostensibly because Switzerland supplies aniline dyes to Great Britain. Efforts, also, have beer made by Germany to use coal as a means of overcoming her necessities brought about by the blockade of her ports, and strangula- tion of her over-sea communications. In this way she has pressed for “compensatory” goods from Switzerland and iron ore from Sweden. Probably some amount of success has been achieved in these directions ; but the method has its limitations, and it will probably be found, when figures are available, that Germany’s coal exports, which, previous to the war, had reached somewhere between 40 and 50 million tons annually, have now shrunk to an appreciable extent. Of our own export trade there is not much to add to what has already been said on a previous occasion in these columns. The position has hardly been improved by the recent Orders in Council, and we do not yet see in what way Mr. Runciman proposes to redeem his promise. There appears to be some’ nervousness on the part of the Government with respect to the supply of tonnage for shipping grain, and, in consequence, the free chartering of tonnage threatens to be even more hampered than before. In the meantime freights are still enormously high. The rate for shipping coal to Port Said, for instance, has been quoted at over 50s. per ton, which is more than seven times the average rate before the war. Moreover, it is difficult to see how any improvement can be effected. Ship owners, in the meantime, have little cause for complaint. Time charter rates are advancing by leaps and bounds, and tonnage owners can now make fabulous sums by this means. When vessels can command from 17s. to 23s. per month per ton displacement, when requisi- tioned for Government service, there will be liftle dissatisfaction with the terms, especially as the ante-war rate was about 4 s. only. One result of these conditions has been a con- siderable increase in what may be termed speculative shipping. Old boats, some of which had passed out of active service, are now being placed on the market to earn a share of these enormous profits. In so far as scarcity of tonnage can be relieved in this way, there seems to be but little objection to this process, but the total effect cannot be very considerable. Coal shippers, therefore, will continue to look for whatever relief is possible to Government action as promised by the President or the Board of Trade. At a time when our financial strength depends so largely upon exports, it seems disappointing to find these curtailed by what looks like an extravagant and wasteful use of shipping. Our coal shipments normally represent more than 10 per cent, of the total value of our exports, and it would appear to be important, on economic grounds, to maintain this branch of our foreign trade to its full extent, especially now that our manufacturing industries are somewhat restricted by munition requirements. It is not, perhaps, always realised what a large part coal exports play in our foreign markets. According to Italian statistics, for example, out of about £24,000,000, representing the value of imports from Great Britain in 1913, nearly £20,000,000 represents the value of raw materials, such as coal. Few would complain of the curtailment of coal exports where the home supply is insufficient. It is, above all things, essential that we should retain what is necessary for naval and military purposes. But stagnation is intolerable. Coal must be kept moving from the pit bank if work is to go on, and this can only be done by a better organisation of available tonnage. , It is a debatable point to what Coal and extent the present generation should Posterity, govern its policy in accordance with the claims of posterity. “What,” said the humorist, “has posterity done for us?” Yet few would deny that our obligations to future generations are real and serious; for, otherwise, where is the motive for the patriotism of the soldier, who gives his life for his country, knowing full well that he is fighting not for himself but for his successors ? Dr. Dugald Clerk has recently discussed this question of the claims of posterity from an engineer’s standpoint. In giving the Thomas Hawksley lecture for the Institution of Mechanical Engineers, he dwelt at some length upon what has come to be known as the Coal Question. He there made a statement of considerable gravity—viz., that we could do with half our present consumption of coal. Indeed, he calculates that even 60 per cent, of our annual coal bill could be saved by putting into practice all the known means of economy. Thus, he reminds us of the fact that 30 per cent, of our factory coal could be saved by the use of gas generators and engines, 8 per cent, of our domestic consumption could be saved by improved methods of heating and cooking. He urges, that more use might be made of the exhaust steam from steam and internal-combustion engines. Large central stations with gas generators and high-efficiency gas engines would in some way be made available for the supply of steam heating and cooking, and would enable 10 million tons of coal to do the domestic work now requiring 36 million tons. All such economies as these appear to'reduce themselves to one single proposition—the utilisation of waste heat. It is, of course, a mere platitude to state that a reduction of waste energy would increase the duration of our fuel supplies. What we require from the engineer is clear guidance as to practical methods for effecting these economies. This, Dr. Clerk gives, and he shows plainly how these economies might be possible under ideal conditions. Dr. Clerk is an admitted authority on the internal- combustion engine. No one will deny the advantages of this method of power production. It obviates many of the heat losses inherent in the steam engine, and converts into work about twice as much of the heat energy of the fuel as in the best steam plant. We need for power purposes at the present time in this country for factory use something like 10| millions of horse-power, that is excluding the demands of railways and shipping, which very nearly double our requirements. These figures are based on the results of the first Census of Production, which gave the total power of industrial engines used in Great Britain and Ireland in 1907 as 10,578,475-horse power, of which nearly nine-tenths were produced from steam engines. The importance of our coal supplies is thus vividly shown. Out of the total 19 or 20 million horse-power required for our modern industrial civilisation in this country, without coal we could only obtain about 4 million. It is interesting to note that these figures represent about 1-horse power per person employed in our manufacturing industries. Dr. Clerk also gave some interesting details as to the future of the internal-combustion engine, which he believes to have nearly reached its limit of size and efficiency. But other developments are possible, and there can be no doubt that the resources of engineering development in connection with energy conversion are by no means exhausted. If it is true that at the present time we could halve our coal