August 25, 1916. THE COLLIERY GUARDIAN 357 the ithermal capacity of the gas, shows the temperature of the products of combustion, provided no heat has been lost. This is a condition which could take place only in an absolutely athermic 'chamber in which the gases are free to expand. The flame temperatures of a few characteristic gases have been calculated :— First, a producer gas burned under three conditions : with cold air, with air pre-heated to 1,000 degs. Cent., and with both air and gas pre-heated to 1,000 degs. Cent. Fig. 1 shows the ideal flame temperatures produced by the latent heat of the gas, 1,618 degs. Cent., by the latent heat of the gas plus the thermal capacity of the air, -1,974degs. Cent., and by the latent heat of the gas plus the thermal capacities of both the gas and the air 2,286 degs. Cent. The additional heat gained by regeneration is shown to be 668 degs. Cent., approximately 29’5 per cent, of the higher tem- perature, or 40 per cent, increase over the temperature which may be attained without regeneration. This readily explains the extensive use of the Siemens furnace for industrial purposes. Second, a lean coke oven gas burned with cold air and with air pre-heated to 1,000 degs. Cent. (fig. 2). Third, natural gas furnished by the East Ohio Gas Company in Cleveland (fig. 3). Fourth, acetylene gas burned with air (fig. 4). Fifth, acetylene gas burned with oxygen (fig. 5). The last two show the effect of the nitrogen of the air in reducing flame temperature. Commercially the flame temperatures shown cannot be realised, but the diagrams furnish valuable comparative data and are an index regarding the suitability of a gas for a particular purpose. MINING INDUSTRY AND MILITARY SERVICE. A number of appeals by Blackpool coal merchants were heard on Thursday of last week, and the following decisions were announced : Three carters, disallowed, but not to be called up before Aug. 31; three coal merchants and carters in certified occupations, conditional exemption, subject to training with the Volunteer Training Corps; .a single-man coal merchant, final exemption until Oct. 31; a porter and loader and two carmen and deliverers, two appeals disallowed, and conditional exemption in the third case. The county appeal tribunal at Chester last week adjourned an appeal of a Chester coal merchant against the decision of the local tribunal to grant two months’ exemp- tion, conditional on no further appeal being made. He claimed that he was in a certified occupation, that his was a one-man business, and that single men in the same trade and in the same district had received conditional exemption. Mr. J. Megson, coal merchant, 38 years of age, of Ossett, has had his appeal on conscientious grounds refused by the appeal tribunal, who declined leave to carry the question further. A colliery company appealed, at a sitting of the Great Harwood tribunal last week, for a cashier amd managing clerk who could not be replaced, and for a clerk who was in charge of the distribution of house coal locally. It was suggested that the latter was to all intents and purposes a “ wharf manager.” If he were taken away it might mean that the firm would have to give up the distribution of coal locally. The cashier and managing clerk was granted con- ditional exemption, and the other man final exemption till Sept. 30. A coke burner appealed for by the same firm received conditional exemption. When Andrew Lowther was charged at Barnard Castle with having failed to report himself for military service, it was stated that he had been working on munitions, but was discharged in mid-July. Recently the military learned that he was working at Woodland Colliery. Defendant informed the magistrates that he understood that miners were exempt, and that as that was his work, he would prefer to be employed in a mine, where the working hours were shorter and the wages higher. He thought he was doing his bit in this way for his country, the same as men who had joined the Army. His plea did not avail, however, for he was fined £2 and remanded to await an escort. Incidentally, this case illustrates one of the disadvantages to miners of being outside of the Munitions Act, for, had mining been included in that Act, a worker on munitions who desired to change his employment to the coal pits would have been given a limited time in which to do so. At the Easington rural district tribunal meeting it was announced that the certificates granted to certain colliery clerks had been cancelled, and that those who wished to appeal would have to come before the tribunal. If they did not appeal, they would have to go up. The advisory com- mittee had been acting upon certain erroneous instructions. At the same meeting, the chairman referred to the cases on the list of workmen at by-product coke works. They were advised by an inspector, he said, that it was essential that these men should be left at their work. They were also advised that they must try to get every available man for the Army. There were one. or two men in groups 1 and 2, and, whilst he would strongly advise them to exempt a large number of the men, he thought it might be possible to give one oi- two a month, say, so that the employers might be able to fill their places. In reply to a member, the chairman added that there was no evidence that some of the men had gone to these works to escape military service. The manager of a by-product works at Shotton applied for 19 men, and stated that some of them were working 11 and 12 shifts per week, and that every one of them was working overtime. Three of the men were directed to join the Army, and con- ditional exemption was granted to the others. At Whitehaven tribunal, the Ullcoats Mining Company applied for conditional exemption for a young man of 18, a surface labourer. The man had only recently been employed, having left the land. The tribunal decided that it was neces- sary to stop young men leaving the land to go into the mines when they became 18. Applicant pointed out that iron ore wTas wanted, and that they were needing more men for the mines. The military representative said this man could not be of much value as a miner. The tribunal refused the application. A workman who applied to the Newcastle Munitions tribunal for a leaving certificate stated that he left the pit, when times were bad, to work on munitions. A woman had now replaced him at that work, and he had been given fresh employment. He desired to return to the mines, however. The chairman granted the certificate asked for, remarking that it was hard that a man of applicant’s age should be asked to learn a new trade. In addition, men were badly needed at the mines. At Newcastle tribunal on Wednesday last, an applicant for exemption on conscientious grounds stated that he was a member of the Society of Friends, and had a Quakei ancestry extending over 250 years. He was a voluntary worker for the Friends’ ambulance. He was a colliery manager, but was willing to give up that employment for ambulance work. He was granted exemption conditional on carrying out that undertaking. Before the Breconshire appeal tribunal on Tuesday, several applications were heard from persons engaged in cutting and handling pit-wood, a large area of plantations in that county having been taken over so that the shortage of imported pit-wood might to some extent be remedied. The tribunal refused to grant exemption, and the applicants were referred to the Ministry of Munitions, so that they might obtain badges, if they so desired.—It was stated in regard to one of the cases that the decision had been come to because of the treatment to which the tribunal was subjected ; certain men who had been refused exemption having gone to the Ministry of Munitions and obtained badges, and so had flouted the tribunal’s decision.—In one or two cases persons load bought horses, and had been accepted as hauliers of timber and given badges ; and “ it was only right,” said the chairman, ” that that fact should be brought to the notice of the authorities.” TRADE AND THE WAR. Included in the list of officers who were mentioned in General Sir Douglas Haig’s despatch, for gallant and dis- tinguished conduct in the field, is the name of Gapt. F. I. Leslie Ditmas, F.G.S., M.I.M.E., A.I.E.E. He served as subaltern in the South African War, and was awarded the medal and two clasps. He was 'in the Reserve of Officers (Durham Light Infantry), and went over with the advance party of the original Expeditionary Force, and is a Deputy Assistant Director of Railway Transport. The import tariff of the Gilbert and Ellice Islands Colony has been revised. Dynamite, gelignite, blasting powder, and similar explosives, including ingredients for making same (admitted free of duty so far) are now dutiable at the rate of 4d. per lb. Hong Kong and the Colony of Bahamas prohibit the exportation of files, railway material (rails, steel sleepers, steel springs, steel wheels and axles), shipbuilding material (boiler tubes, condenser tubes, steel plates and sectional materials), steel bars, angles, sections, blooms, billets, slabs, girders, beams', ingots, and tubes. Nicaragua, in 1915, imported iron and steel (including manufactured goods) of the value of 380,871 cordobas. In the previous year the value was 520,790 cordobas. The Board of Trade has ordered the winding up of the business of R. Dolberg, manufacturer of portable railways, Finsbury-pavement, London. According to a Geneva telegram, the Coal Supply Office of Valais has threatened to boycott a certain municipal gas works in the canton of Vaud if it continues to deliver coke to a concern exporting this product to France. A new company, entitled La Compania de Deposito de Carbones de Bilbao, has been formed at Barcelona, with a capital of <£20,000, to establish floating and land coal depots at the port of Bilbao. British shipping interests are reported to have completed the acquisition of important oil supplies in California. The British concerns involved are stated to be the Cunard, White Star, Union Castle, Elder Dempster, Atlantic Transport, Dominion, and Leyland lines, and it is likely that most, if not all, of their vessels will be fitted to burn oil when ship- building conditions are easier. The syndicate will also estab- lish large stations for the supply of oil fuel on various ocean routes. The business of F. Turpitz and Company, iron and steel founders, 150, Fenchurch-street, London, is being wound up by order of the Board of Trade. OBITUARY. News has been received unofficially that Lance-Corpl. George H. Hatfield, of the Sportsmen’s Battalion, has been killed in action in France. Lance-Corpl. Hatfield was the secretary of the Wath Main Colliery Company, enlisted in March 1915, and went abroad in October last. Thomas Harvie, a mining contractor, residing in Cam- buslang, died in the Glasgow Royal Infirmary as the result of being crushed by a fall of stone in Priory Colliery, Blantyre. Mr. Thos. Jones, a director of the South Hetton Coal Company Limited, died at his residence in Durham City, at the age of 90 years. Mr. Jones was a native of Bishop- wearmouth. His association with the South Hetton Coal Company commenced in 1861 as a trustee. In 1874, on the formation of a limited liability company, he was elected to the board in succession to the late Mr. John Walker, of Bradley Hall. In September 1877 he was appointed managing director, a position he retained until 1914, when, in consequence of advancing years, he retired from the work of management, still remaining a director. Mr. Matthew Cole, formerly a member of the executive committee of the Northumberland Miners’ Association, died at the age of 56. The death is announced of Mr. Henry Lewis (Tynant), aged 66. Mr. Lewis was connected with the Welsh Navi- gation Colliery, and was formerly a director of the Albion undertaking. He was a member of the Coal Owners’ Asso- ciation, and had been on the Conciliation Board. At one time he occupied the position of chairman of the South Wales and Monmouthshire Indemnity Society, but resigned three or four years ago. The French Ministry of Commerce has appointed a Com- mission to draw up a scheme for the establishment, in France and Allied countries, of an industry dealing with the distillation of non-coking fuels, in order to remedy the shortage of coal in France, and to obtain the by-products of distillation. The Commission comprises : Capt. Bkaizeix, Dr. Bronislawski, M. H. Le Chatelier, M. Clerault, Com. Gruner, M. E. Ledoux, and Capt. Guillot. SOME RECENT DECISIONS UNDER THE WORKMEN’S COMPENSATION ACT. [Specially Contributed.] Employment and Special Risks. An interesting addition to the list of decisions bearing on the question whether a special risk is one incidental to the employment, so that an accident due to the risk is an accident arising out of and in the course of the employment, nas recently been given by the House of Lords. The claim was brought by the widow of a coal miner who had been in the employment of the Earl of Bradford, and decided to join the Army. On examination, he wTas told that his teeth would require immediate attention, and, with the permission of his employers, he made an appointment with a dentist during working hours. Leaving at an unusual time, he was killed in attempting to push his way between two moving tubs instead of waiting a few seconds to give the operator time to stop them. The county court judge held that the man voluntarily, and by his own act, encountered an added peril not incidental to bis employment, and therefore that the accident did not arise out of the employment. That finding was upheld by the Court of Appeal, and has now been upheld also by the House of Lords. Without calling on counsel for the employer, their lordships arrived at the conclusion that the man had no right to leave except under conditions which, had he waited, would have ensured safety, and that he alone was responsible for the added peril which caused his death. As a contrast to this decision, one recently given at New- castle may be briefly noted. A workman employed as a boiler fireman crossed a railway track inside the works to get a spanner, but on recrossing the track to work on a water-tube boiler he was caught between two trucks and received injuries from which he died next day. In support of an application by the widow, witnesses were called to testify that it was customary for the workmen to cross the railway, the practice being to keep a sufficient gap between two wagons. For the employers it was contended that in attempting to pass between two trucks which were close together the workman added to his employment a risk that was wholly unnecessary and in no way incidental to the employment. The county court judge, however, found that the man was using .a crossing which the workmen were accustomed to take, and on that finding the judge held that the man took no additional risk that was obvious to him. A Question of War Bonus. A question of considerable interest to miners and colliery proprietors has been raised at Worksop County Court recently, in an action in which a miner sought to recover increased compensation from the Shireoaks Colliery Com- pany. The workman’s case was to the effect that in May 1913 he contracted nystagmus, and was paid full compensa- tion of half-wages until January 1914, when he was put on light work at a certain wage, receiving in addition a com- pensation payment of 8s. a week, that sum being half the difference between his present and his former wage. This arrangement purported to be in accordance with paragraph 13) of Schedule 1, wdiere it is provided that “ in the case of partial incapacity the weekly payment shall in no case exceed the difference between the amount of the average weekly earnings of the workman before the accident and the average weekly amount which lie is earning or is able to earn in some suitable employment on business after the accident, but shall bear such relation to the amount of that difference as under the circumstances of the case may appear proper.” The case for the employers was that an agree- ment had been entered into to the effect indicated, but the workman now sought to recover increased compensation on the ground that in calculating the difference between his present and his former earnings the employers had wrongly taken into consideration as wages the 154 per cent, bonus or advance granted under a decision of the Conciliation Board to meet the increased cost of living owing to the con- ditions arising out of the war. His Honour Judge Allen considered that the bonus was part of what the workman earned in a suitable employment, and that the employers had rightly taken it into consideration in fixing the com- pensation payment. The Coal Difficulty in Ireland.—At the annual meeting of the Irish Association of Gas Managers in Dublin, the presi- dent, Mr. J. E. Enwright, said that while fully appreciating the abnormal condition's prevailing, consequent upon the war, he could not disguise from himself the fact that some contractors, merchants, and ship owners were availing them- selves of their position as monopolists to make huge profits out of the opportunities afforded them by the w’ar, at the expense of the nation’s requirements. The action of ship owners in charging freights equal to, and, in many instances, greater than, the increased cost of the coal itself was not only selfish, but very unpatriotic. At present excep- tional difficulties and worries in the management of gas undertakings were being experienced in Ireland, as the whole of the coal supplies were seaborne, and not only had they to contend with railway difficulties on the other side, but, also, with the uncertainty of shipment, owing to submarine dangers, and with enormously inflated shipping freights. Further, ho would like to emphasise the fact that the Price of Coal (Limitation) Act had not afforded any relief to gas undertakings in Ireland. Colliery people, when remonstrated with, stated that the difference in the price charged was due to the increase in railway rates between the pit head and the port of shipment. It was hard to believe that the railway rates on the other side of the Channel had increased to such an extent, whilst on the Irish side they remained stationary. If steps were not promptly taken to come to the aid of the gas industry’ in Ireland, and to prevent carrying companies from charging freights out of all proportion to the exigencies of even war times, and to ensure the carrying of coal at freights consistent with fair dealing, many gas works in Ireland would have to close down, with consequent loss and inconvenience to a large section of the community. Monopoly must be checkmated, and the industry which the Irish Asso- ciation of Gas "Managers represented must receive some pro- tection from utter annihilation. The president proceeded to point out that seaborne coal would never again be as cheap as heretofore. Consequently, the outlook for small gas works in Ireland was ven* black indeed. But he was convinced that a plant, such as that to which he had referred, on a smaller scale, would be a means of not only saving those works from bankruptcy, but of converting them into prqfit- able undertakings