June 28, 1918. THE COLLIERY GUARDIAN. 1305 TDor Sale, Pit Props, diameters at top .-I- 1% in. to 7s in.—Particulars on application to BLACKMAN, 43, King’s-road, St. Leonards-on-Sea. TAor Sale, about 100 tons of New Coated Jj 8 in. SOCKET and SPIGOT PIPES, together with specials, valves, &c. JOSEPH PUGSLEY & SONS LTD., Lawrence-hill, Bristol. T?or Immediate Sale and Delivery, two I* 15-ton Self-propelling STEAM DERRICK CRANES, in first-class condition, and one 3-ton STEAM DERRICK CRANE, with 45 ft. steel jib. JOSEPH PUGSLEY &. SONS LTD., Lawrence-hill, Bristol. For Sale, one strong heavy Cast Iron TANK, constructed with, thick tlanged plates, bolted and cross rods inside, all rounding corners, and about 18 ft. by 18 ft. by 9 ft. deep.—Price and particulars, letters, Box 7087, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. FOR SALE. tons Bridge Rails, 20-lb. section, in M 6 ft., 9 ft., and 12 ft. lengths; equal to new. Four CHIMNEY STACKS, 26 ft. long, 2 ft. 6 in. dia. Four VERTICAL BOILERS, 11 ft. by 3 ft. 6 in. to 5 ft. 6 in. by 2 ft. 6 in.; in splendid condition, 80 lb. press. Five PETROL MOTOR LORRIES, 2 ton to 5 ton. JOSEPH OXLEY, Norfolk-street, SHEFFIELD. ’Phone 830. ’Grams. “ Stability.” T?or Sale, one Cast Iron Double Inlet 1* CUPOLA or COLLIERY FAN, twin-pulley drive, melting capacity 13,000 lb. per hour, 26 in. water gauge. Apply— J. STOTT & CO., Vernon Works, Oldham. T?or Sale.—One Second-hand Vertical I* BOILER, 11 ft. high by 4£ ft. diameter, complete with mountings and fittings. Insured with Vulcan Co. for 80 lb. pressure. One pair of New Self-contained Single-geared HAULING or WINDING ENGINES, having drum 30 in. diameter by 28 in. wide; suitable 120 lb. pressure.—Box 7095, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Locomotive Wanted, for Sale or Hire ; preferably 16 in. cyls.; in good condition. Quote price, and state where loco, can be seen.—Address “ LOCO.,” WM. PORTEOUS & CO., Advg. Agents, Glasgow. FOR SALE. 1. ONE HORIZONTAL HAULING ENGINE, having two cylinders 22 in. dia., 3 ft. 6 in. stroke; Stephenson link motion reversing gear and slide valves, complete with heavy flywheel, pinion and spurwheel (in halves), but without second motion shaft. 2. ONE SINGLE CYLINDER INGERSOLL-RAND COMPRESSOR, steam cylinder 18 in. dia., air cylinder 18J in. dia., 2 ft. stroke; compressor suitable for a speed of 60 revs, per minute and to compress to 60 lb. per sq. inch gauge pressure. 3. ONE HORIZONTAL ENGINE, having two cylinders 16 in. dia. by 2 ft. 8 in. stroke, slide valves, shaft mounted with flywheel and rope-driving pulley 9 ft. dia., suitable for seven Is in. dia. cotton ropes; a driven pulley 4 ft. dia. can also be supplied if required. 4. ONE ROPE-DRIVEN AIR COMPRESSOR, having two cylinders 22 in. dia. by 3 ft. stroke; cylinders fitted two years ago by Messrs. Walker Brothers Ltd., Wigan; water jacketted, valves of latest steel plate type, shaft mounted with very heavy flywheel, and rope pulley le> it. dia. for twelve 1% in. dia. cotton-driving ropes; a countershaft with pedestals and rope and belt pulleys suitable for belt-drive from a motor can also be supplied. Com- pressor suitable for a speed of 60 revs, per minute and to compress to 100 lb. per sq. inch gauge pressure. For prints and authority to inspect, apply— THE BOTHER VALE COLLIERIES LIMITED, Treeton, near Rotherham. In Pocket Size. Pp. i.-xxi. + 454. Strongly Bound in Leather. Fully Illustrated. lOs. 6d. net. THE PETROLEUM TECHNOLOGIST’S POCKET BOOK. By SIR BOVERTON REDWOOD, Bart., D.Sc., &C., and ARTHUR EASTLAKE, M.I.M.E., A.M.I.Mech.E., &c. Synopsis of Contents.—Part I.: General Information about Petroleum (Origin, Occurrence, Prospecting, acquiring Land, Raising, Storage, Refining, etc.). Part II.: Geological (Identification of Rocks, Angle of Dip, Maps, Oil-bearing Areas, Oil per acre, Bitumens, etc.). Part III.: Physical and Chemical (Specific Gravity, Analysis of Gas, Viscometry, Calorific Value, Flash Point, Distillation, Candle Power, etc., etc.). Part IV. Production (Drilling, Casing, Water, Raising Oil, Plugging, Cost of Drilling, etc., etc.). Part V.: Refining, Transport, Storage and Testing (Tanks, Flow of Gas in Pipes, Pipe Lines, Pumping, Railway Cars, Barrels, etc., etc.). Part VI.: Uses (Liquid Fuel, Air required, Oil Engines, Natural Gas, Asphalt, etc.). Part VII.: Weights and Measures (English and Foreign). ^VIII.: Miscellaneous. Part IX.: Statistics (of Production, Asphalt, Oil Shale, Ozokerite, Natural Gas). ‘‘Excellent in every way . . . the tables and statistics appear to be exactly those which will be of most use.”—Engineer. LONDON : CHAS. GRIFFIN & CO. LTD., Exeter St., Strand, W.C. 2. J. W. BAIRD AND COMPANY, PITWOOD IMPORTERS, WEST HARTLEPOOL. YEARLY CONTRACTS ENTERED INTO WITH COLLIERIES. OSBECK & COMPANY LIMITED, PIT-TIMBER MERCHANTS, NEWCASTLE-ON-TYNE. SUPPLY ALL KINDS OF COLLIERY TIMBER.^ Telegrams—” Osbecks, Newcastle-on-Tyne.” *** F°r other Miscellaneous Advertisements see Last White Page. TO OUR READERS. The Government, by Order in Council, is issuing in- structions prohibiting the return of all unsold papers and periodicals. The effect of this will be that newsagents will only stock the “ Colliery Guardian" if actually ordered by their customers, and to prevent disappoint- ment our readers should either subscribe for the regular supply of the journal direct, or place a definite order with their newsagent. C'dlurii Siumlian AND Journal of the Coal and Iron Trades. Joint Editors— J. V. ELSDEN, D.Sc. (Lond.), F.G.S. HUBERT GREENWELL, F.S.S., Assoc.M.I.M.E. (At present on Active Service). LONDON, FRIDAY, JUNE 28, 1918. The London coal market continues unusually brisk. Good supplies are coming forward, both railborne and seaborne, but quite inadequate to the pressing demand. Steam coals are practically unobtainable. Two shillings and sixpence per ton advance on and from Monday, June 24, on all colliery prices and retail prices has been sanctioned by the Board of Trade. On the Tyne and Wear fuel is very scarce, and the home and Allied demand leaves practically nothing for neutrals. Tenders for 16,500 tons of steam coal have been sent in to the Norwegian Government at 60s. for Blyth large and 45s. for smalls. In York- shire the conditions are acute, the supply of house coal being particularly scanty. The position in South Wales is again easier, especially in anthra- cites, though beans and peas are in a strong position; shipments have been ijiore active. The Scottish markets continue strong, the output being inadequate and stocks exhausted. The Board of Trade have made an Order increasing the price of all coal as from Monday, June 24. The amount of the increase is 2s. 6d. per ton, except in the case of shipments to France and Italy, in which cases the amount of the increase is 5s. per ton, the additional 2s. 6d. in these cases corresponding to the war wage increase of 2s. 6d. per ton which was not applied to shipments to France and Italy in October last. The above new Order, has been favourably received by the coal industry, as the prices now enable many collieries to make a profit which have not been able to meet the growing expenses of pro- duction. It is, however, considered in some quarters that the 2s. 6d. on house coal is insufficient; and the opinion is expressed that a percentage on values, instead of a flat rate of increase, would have been more equitable. Neutral tonnage is scarce on the north-east coast, and fixtures are almost entirely for Scandinavia at rising rates, 185-190 kr. being fixed for Gothenburg, and 190-210 kr. for other Swedish ports. In spite of partial tonnage difficulties the South Wales freight market is much brisker than of late. The Society of Chemical Industry will hold its annual meeting on July 17, 18. and 19, in the Chemical Department, University Buildings, Bristol. The president, Prof. Henry Louis, will deliver an address, and the papers to be submitted include: “ Some Aspects of the Low Temperature Carboniza- tion of Coal,” by Mr. Edgar C. Evans, B.Sc.; “ Sources of Loss during the Manufacture of Con- centrated Ammonia Liquor,” by Mr. A. Marsden; “Notes on the Synthetic and Thermal Synthesis of Ammonia,” by Dr. E. B. Maeted ; “ Some Notes on the Commercial Fractional Separation of Benzene, Toluene, and Xylenes,” by Dr. T. H. Butler and Mr. F. J. W. Popham. The Coal Controller has offered the miners an additional war wage of 6d. per day to men of 16 years and upwards, and of 3d. per day to boys under 16. It will be remembered that in 1916 Trade after various committees were appointed the War. to consider the question of trade after the war, especially in relation to international competition, and to report upon any measures deemed necessary to safeguard the position of British industry. Amongst these was a Committee on the Coal Trade, which has not yet presented its report;* but a number of other committees have done so, and amongst them the report of the Iron and Steel Trades Committee deserves attention, not only on account of the importance of this key industry directly, but also because of its intimate relation to the coal trade. It is interesting, in the first place, to note the spirit in which the Committee endeavoured to set about their task, with minds free from preconceived political views or economic theories. Their purpose was not to test economic theories, but to establish an active policy. It is, therefore, greatly to be regretted that it was not found possible to arrive at a more unanimous decision. The section of the report dealing with commercial reconstruction immediately after the war, made at the special urgent request of Lord Balfour’s Committee, had three dissentients out of ten members. These were Sir Hugh Bell, Mr. John E. Davison and Mr. James Gavin. The particular points upon which these gentlemen disagreed included the prohibition of imports of manufactured and semi-manufactured iron and steel during the period of reconstruction, and provisions aimed at securing to British industry the necessary supplies of raw materials. Unfortunately, the dissentients have not apparently made up their case, for the grounds of their dissent are not yet forth- coming, although these are promised at an early date. Sir Hugh Bell gives only qualified support to the section dealing with iron ore supplies, and he disapproves altogether with the proposal that mining concessions within the Empire should not be granted to aliens without Government sanction. His reason is that Great Britain has derived great benefit from the absence of such limitations in other lands, and that the effect of such a restriction might lead to a similar course being adopted by foreign Govern- ments, to the detriment of the British iron trade. The objection, however, seems to be based rather upon principle than upon practical grounds, for the Iron and Steel Committee do not go further in* their recommendation than to place this question of foreign * As we go to press, a summary of the recommendations of this committee has been issued; but, as the full text of the report has not yet reached us, we defer comment upon it until next week. mining concessions under control. There would be no difficulty in regard to the grant of permits where- ever it might be to our interest to do so ; but the provision of this restriction seems to us to be necessary in view of what has happened in the past with regard to German methods of dealing with our own mineral resources. However long the war may last, we suppose there will be some who will fail to profit by the lesson it is teaching us. Still more emphatic, however, than the points of difference mentioned above are the disagreement on the part of Sir Hugh Bell and Mr. Davison with any of the Committee’s recommendations which might appear to suggest the necessity of a change in the fiscal policy of the United Kingdom. We do not know precisely which passages in the report might be considered as liable to the construction which is here so strongly opposed, but Sir Hugh Bell goes still further and states that he is in almost total disagreement with the arguments and many of the statements contained in the report, and yet he does not take great exception to the Summary of Recommendations as stated. In particular he com- ments upon that one which refers to the supply of materials and labour, and especially with regard to coking coal. The Committee consider that by the natural operation of demand, a larger proportion than hitherto of coking coal will be reserved for home use ; but that it would be preferable to reinforce the natural operation by bringing into intimate relation the iron and steel manufacturers and the owners of coking coal. Sir Hugh Bell believes firmly in the efficacy of the natural operation of demand, and he is strongly opposed to any arbitrary interference on the part of the Government, which he seems to scent in the latter part of the Committee’s recommendation as to estab- lishing intimate relations between coal owners and iron masters. Logically, of course, it seems right to assume that under Government interference the law of demand would no longer be natural. It is quite a debatable question whether it is possible to reinforce a natural operation without making it artificial. We do not, however, believe that the Committee had in view any suggestion of Government interference in this sense; but were merely thinking of the general principles of co-ordination and co-operation which must inevitably lie at the foundation of any successful reconstruction scheme. The Department of Scientific and Constitution Industrial Research has at last pub- □f lished the important monograph on Coal. the constitution of coal,* prepared by Drs. Marie C. Stopes and R. V. Wheeler, the framework of which is based on a joint paper read by the authors read before the London Section of the Society of Chemical Industry, in January 1917. One of the inevitable disadvantages of delayed publication, however, has been the omission of any reference to works published since the spring of last year; and for this reason it might have been better not to have printed 1918 as the date of publication; for some important papers are necessarily missing from the valuable bibliography given at the end of the monograph, and constituting one of its important features. The authors have performed a most useful task in presenting those interested in this subject with a statement of the present aspect of the coal problem. In a brief prefatory note absolute completeness is disclaimed; but this is undoubtedly one of the most useful features of this review of the question; for, simple as the initial problem of the nature of coal may appear to be, the quest for a solution has led to an enormous mass of research and much speculative work of doubtful value. Anyone entering this field of investigation is confronted with a bewildering mass of literature bearing upon it. Amongst much research work of permanent value and stimulating influence, there is unfortunately a great deal which not onlj leads nowhere in particular, but, what is far worse, may prove to be positively mischievous in its effects upon those who are not able, owing to lack of knowledge or experience, to assess its worthlessness. Even when the chaff has been winnowed from the grain, there is still the danger of false perspective. Not all the facts which have been established with regard to the nature and properties of coal are of equal value and importance. As facts they must be regarded as additions to the sum of human knowlege, but this does not imply that they must necessarily form a basis for generalisation. The authors of this monograph, therefore, deserve our gratitude, not only for selecting, with the skill of the expert, the really pertinent researches of previous workers in this field of discovery, but also for their endeavour to present these in an approximately true perspective. We cannot pretend to convey adequately the full scope of the authors’ labours in bringing together the results of previous investigations into the consti- tution of coal. A great deal more than a mere summary of these is given, for throughout the memoir, the authors’ views and criticisms are in * Monograph on the Constitution of Coal, by Marie C Stopes, D.Sc., PhD., and R. V. Wheeler, D.Sc., published for the Department of Scientific and Industrial Research, by H.M. Stationery Office. London : Imperial House, Kings- way, W.C. 2. Price, 2s.