March 26, 1915. THE COLLIERY GUARDIAN. 669 XX.—Drainage, Pumping, etc. Multi-stage Centrifugal Pumps. “ Coll. Engin.,” March, p. 410; 5 fig. Balancing Axial Thrust in Centrifugal Pumps (Entlast- ungsvorrichtungen an Kreiselpumpen). —. Schacht. “ Dingl. J.,” Feb. 6, pp. 47-51; illus. XXI. —Preparation. Ore Grinding Mill. “ Iron. Tr. Rev.,” Feb. 18, p. 374; 2 fig. Drying Washed Coal. F. E. Butcher. “ Coal Age,” Feb. 20, p. 325. Draining Small Coal in Washeries (Uber die Entwas- serung der Feinkohle in den Steinkohlenwaschen). —. Stratmann. “ Bergb.,” Feb. 4, pp. 57-58; Feb. 11, pp. 75-77; Feb. 18, pp. 87-89; illus. XXII. —Briquettes. The Briquetting of Saskatchewan Lignite. “ Canad. Engin.,” Feb. 18, p. 259; 3 fig. XXIII.—Coke Ovens. Gleanings in Coke Oven Practice. J. W. Lee. “ Colliery Guard.,” March 12, p. 544. (Abst. paper read before Yorkshire Jun. Gas Assoc.) Blastfurnace or Producer Gas for Coke Ovens. “ Gas Wld.” (suppl.), March 6, p. 20. Common Difficulties on By-Product Coke Oven Plant : Their Cause and Remedy—III. “ Manager.” “ Gas Wld.” (suppl.), March 6, p. 13. (Deals with tar extractors.) Coke Oven Gas for Town Supplies. “ Gas Wld.,” Feb. 27, p. 217. Collin Coke Oven Plant at the Radbod Colliery (Die Koksofenanlage Bauart Collin auf Zeche Radbod). —. Groeck. “Z. v. D. Ing.,” Feb. 6, pp. 116-19; illus. Wood Charcoal Filter for Waste Gases in the Production of Sulphate of Ammonia (Holzkohlenfilter fur die Abgase bei Herstellung von schwefelsaurerem Ammoniak). —. Reinhard. “ J. Gasbel.,” Feb. 6, pp. 64-65; illus. A New Method of Producing Ammonium Chloride (Ein nenes Verfahron zur Herstellung von Chlor- ammoniak). —. Strommenger. “ Mont. Rdsch.,” Feb. 1, pp. 68-71; illus. (The condensates from sulphate of ammonia processes are worked up into a pure chloride.) Determination of Benzol in Gases (Benzolbestimmung im Gase). —. Krieger. “ J. Gasbel.,” Feb. 6, pp. 61-64; illus. Naphthalene Washer for Coke Oven Gas (Naphthalin- wascher fur Koksofengas). W. Strommenger. “ Gliickauf,” Feb. 6, pp. 138-41; illus. XXIV.—Fuels, Testing, etc. General Principles Governing the Complete Analysis of Minerals and Ores. W. R. Schoeller. “Analyst,” March, p. 90. On the Composition and Qualities of Coal. E. C. Jeffrey. “Econ. GeoL,” Dec. 1914, p. 730; 17 fig. (Research at Harvard Botanical Labs.) The Uses of Coal Gas for Industrial Purposes. FI. M. Thornton. “ Journ. Roy. Soc. Arts,” March 19, p. 401; 21 fig Coal and Its Relation to the Pharmacist. “ Colliery Guard.,” Feb. 26, p. 451. Gas Producers. R. H. Fernauld. “ Coll. Engin.,” March, p. 415. (Abst. paper read before Cleveland (U.S.) Eng. Soc.; deals with utilisation of lignite and other low-grade fuels.) The New Knowledge of Coal and Its Practical Applica- tion. H. C. Porter. “Coal Tr. Bull.,” Feb. 15. (Lecture before Dep. Chem. Eng. Univ., Pittsburg.) Purchasing Coal on Specifications. E. M. Ponton. “ Mine, Quarry, and Derrick,” Feb. 17, p. 49. The Hampton Roads Coals — III. F. R. Wadleigh. “ Coal Age,” Feb. 20, p. 331; 1 fig. IV., Feb. 27, p. 375; 1 fig. Naphthalene Engines (Naphth alinmotoren). —. Georgius. “ Dingl. J.,” Feb. 20, pp. 65-67; illus. Simple and Accurate Method of Determining Calorific Power with the Junkers Calorimeter (Uber eine ein- fach und genaue Art der Heizwertbestimmung mit dem Junkerschen Kalorimeter). Strache and Glaser. “ J. Gasbel.,” Feb. 20, pp. 85-88; illus. XXV.—Steam Engines and Boilers. Robinson Marine Superheater. “ Engineer,” March 19, p. 286; 5 fig. The “ Gresley ” Locomotive Superheater. “ Railway Gaz.,” March 19, p. 311; 4 fig. Formulae Connecting the Pressure and Temperature of Saturated Steam. S. Godbeer. “ Engineering,” March 12, p. 290. Boilers, Economisers, and Superheaters. R. A. Smith. 128 pp. 7s. 6d. net. Crosby Lockwood and Son. Cracks in End Plates of Boilers with Internal Flues and Dished Ends. A. Obry and P. Bonet. “Vulcan,” March, p. 182; 5 fig. (Trans, report Cong. Chief Engin. Assocs. Steam Users, Paris, 1913.) Utilising-Waste Gases for Heating Water (Die Ausnutz- ung der Abgaswarme durch Wasservorwarmer). —. Dosch. “Braunk.,” Feb. 5, pp. 599-602; illus. Preliminary Tests of an Exhaust Steam Turbine Plant (Abnahmeversuche an einer Abdampfturbinenanalage). —. Deinlein. “ Z. Bayer. Rev. V.,” Jan. 31, pp. 13-15; Feb. 15, pp. 20-23; illus. New Boiler Firing Patents (Neue Patente auf dem Gebiet der Dampfkesselfeuerung). —. Pradel. “ Z. Dampfk. Betr.,” Feb. 19, pp. 62-63; illus. Preventing Gas Explosions in Boiler Firing with Brown Coal (Verhutung von Explosionen bei Braunkohlen- feuerung in Kesselanlagen. —. Grempe. “ Braunk.,” Feb. 12, pp. 614-16. Steam Engine versus Electro-motor for Plants Requiring both Power and Heat (Wahl zwischen Dampfmaschine und Elektromotor bei Betrieben mit gleichzeitigen Kraft- und Warmebedarf). —. Barth. Z. Dampfk. Betr.,” Feb. 12, pp. 51-53. Improvements in Mechanical Stokers (Fortschritte in Mechanischen Wurffeuerungen. —. Georgius. “ El. Anz.,” Feb. 14, pp. 75-76; illus. Power Costs. W. B. Woodhouse. “ Trans. Inst. Min. Engin.,” v. 49, p. 2; 6 fig. XXVI.—Compressed Air. Measuring the Efficiency of Air Compressors (Die Mess- verfahren zur Bestimmung dor Forderleistung von Luftkompressoren). —. Jahn. “ Z. Kompr. Gase.,” . Jan., pp. 4-10; illus. Recent Progress in the Construction of Turbo-Blowers and Turbo-Compressors (Neuere Fortschritte im Ban von Turbogeblasen und Turbokompressoren). •—. Wunderlich. “ Z. d. Ing.,” Feb. 27, pp. 174-81; illus. XXVII.—Electricity. Polyphase Commutator Machines and their Application. N. Shuttleworth. “ Journ. Inst. Elect. Engin.,” Mardli 15, p. 439; 41 fig. Electricity Applied to Mining. C. P. Sparks. “ Journ. Inst. Elect. Engin.,” March 15, p. 389; 32 fig. “ Colliery Guard.,” Feb. 26, p. 434; March 5, p. 491; March 12, p. 540; March 19, p. 596; 31 fig. New Power Station at Deep Duffryn Colliery. “ Iron Coal Tr. Rev.,” March 19, p. 402; 1 fig. Experiences with Electrical Plant. A. Smellie. “ Iron Coal Tr. Rev.,” March 12, p. 368. (Paper read before Assoc. Min. Elect. Engin.) Central Station Power in Coal Mining Operations. T. R. Hay. “Eng. Mag.,” March, p. 833; 15 fig. (Shows the advantages of purchased power, with illus- trations from American practice.) Swiss Turbo-Generator Sets—II. “ Engineer,’’ Feb. 26, p. 204; 12 fig. Protective Devices Against Lightning and Surges. E. K. Scott and L. F. Fogarty. “ Iron Coal Tr. Rev.,” Feb. 26, p. 208; 34 fig. in all. (Cont. paper read before Assoc. Min. Elect. Engin.) Electrical Accidents in Prussian Mines during 1913 (Unfalle in elektrischen Betrieben auf den Berg- werken Preussens im Johre .1913). “ Z. B. H. S.,” vol. 62, No. 4, pp. 343-67; illus. Protecting Low-Tension Conductors from High-Tension Current (Schutz von Schwachstromleitungen gegen Starkstrom). —. Schrdter. “ E. T. Z.,” Feb. 18, pp. 77-78; illus. Alternating Current Boosters (Wechselstrompufferung). —. Schroder. “ E. T. Z.,” Feb. 11, pp. 61-63; Feb. 18, pp. 77-78; illus. Power Supply to the Mines of the Rand. B. Price. “S. African Min. Journ.” (suppL), Feb. 27, p. vii.; 10 fig. XXVIII.—Surface Transport. Mechanical Transport of Coke. R. E. Gibson. “ Journ. Gas Lighting,” March 2, p. 511; 1 fig. Freight Marshalling Yards. W. F. Lawrence. “ Rail- way Mag.,” Feb., p. 101; 8 fig. The Operation of a Goods Shed. T. E. Argile. “ Rail- way Gaz.,” March 19, p. 307; 5 fig. Mechanism for Handling Coal on Ocean Colliers. J. F. Springer. “Black Diamond,” March 6, p. 184; 4 fig. A New Type of Powerful Locomotive for the Notting- hamshire and South Yorkshire Coal Traffic. “ Colliery Guard.,” March 19, p. 609; 1 fig. Electrical Haulage on the Trent and Mersey Canal. “ Colliery Guard.,” March 5, p. 489; 4 fig. Notes on Coal Storage. “ Elect. Rev.,” March 19, p. 398. A Railway Coaling Plant. “ Eng. Rev.,” March, p. 282; 2 fig. (New plant erected by Fraser and Chalmers at Camden Steam Shed for L. & N.-W. R.) American Methods of Handling Coal. J. F. Springer. “ Cassier’s Eng. Monthly,” March, p. 131; 9 fig. Telpher Coal Handling Plant at Hackney Generating Station. “ Engineering,” Feb. 26, p. 243; March 12, p. 296; 54 fig. (Constructed by W. J. Jenkins and Company.) Aerial Ropeways—III. “ Engineer,” March 5, p. 222;. 9 fig. The Dumping of Refuse by Aerial Ropeway. A. Varty. “ Iron Coal Tr. Rev.,” Feb. 26, p. 295; 10 fig. (Paper read before Nat. Assoc. Coll. Man.) Coal Lifting and Distributing Plant, Leeds Corporation Electricity Works. “Contract Journ.,” March 17, p. 535; 4 fig. New Grab Pulleys (Neuer Greiferscheiben). —. Buch el. “ Braunk.,” Feb. 19, pp. 625-28; illus. New Type of Loading Bridges (Verladebrucken neuerer Bauart). —. Feigl. “ Z. d. Ing.,” Feb. 20, pp. 149-59; illus. Loading and Unloading Plant for Coal Stockyards (Uber das Be- und Entladung von Kohlenhalden). —. Freyberg. “ Fordertechn.,” Feb. 15, pp. 25-30; illus. Cable Cranes and Aerial Ropeways (Kabelkrane und Luftseilbahnen). —. Buhle. “ Ann. Glaser.,” March 1, pp. 85-91; illus. XXIX. —Sanitation, Diseases, etc. The Influence of Temperature on the Secretion of Sweat. J. M. O’Connor. “ Journ. Physiol.,” v. 49, 3, p. 113; 2 fig. Danger of Poisoning by Wood Preservatives (Beitrage zur Frage der Gifttgefahr durch die zur Holzkonser- vierung benutzten Stoffe). —. Moll. “ Z. angew. Chomie.,” Feb. 23, pp. 73-75. XXX. —Mining Laws, Royalties. The Alberta Coal Mines Act. J. M. Gordon. “ Canad. Min. Inst. Bull.,” Feb., p. 14. Old Mining Laws and Regulations in Bohemia, Moravia, and Silesia (Die alien Bergrechte mid Bergordnungen in Bbhmen, Mahren und Schlesien). —. Lowag. “Mont. Rdsch.,” Feb. 16, pp. 112-17. Contribution to the History of Mining (Beitrage zur Geschichte des Bergbaues). —. Lowag. “ Mont. Rdsch.,” March 1, pp. 142-46. (Austrian mining law of May 23, 1854.) THE FREIGHT MARKET. Tonnage continues to be in excessive supply on the north- east coast, and the demand is comparatively small, owing to the fact that colliery turns are so well booked up. The result is that rates continue to rule in charterers’ favour. Figures, in fact, are coming down with a run, thereby rendering coal business very much more possible at remunerative prices. Coasting business is being done from the Tyne at 8s. to London, as against a minimum of 10s. last week. North France has Rouen at 15s., a decrease of 4s. on last week’s lowest rates. The Bay is represented by 22s. 6d. to Bordeaux, as compared with 26s. The Mediterranean has Marseilles down to 25s., as compared with 35s., and Algiers reported at 21s. 6d., as against 31s. 6d. At South Wales there has been a similar slump. In every instance figures are markedly reduced. North France has Rouen at 14s. 3d. from Cardiff, as compared with 16s. a week before. The Mediterranean is reduced to 25 fr. to Marseilles, as against 30 f.r. The Bay is down to 154 fr. to St. Nazaire, as com- pared with 19| fr. South America is represented by 23s. to Rio de Janeiro, as against 31s.; 31s. to Rosario, as against 31s. 3d. ; and 29s. to the River Plate. Business in the Cardiff freight market is difficult by reason of congested loading turns and the extreme pressure for all kinds of coal on contract account. Tonnage offers freely, and rates are inclined to droop still further than the figures just quoted. The circumstance that further steamers have recently been requisitioned on Admiralty account, and that the Italian Government has recently engaged a number of British steamers on time charter, does not seem to have sufficiently denuded the tonnage market to have prevented rates relaxing. The Italian charters, by the way, have been arranged on the basis of 12s. 6d. per ton dead weight per month, or about 18s. 9d. per ton gross, a figure which compares favourably with the 11s. 6d. per ton gross received by the owners of vessels requisitioned by the British Government. Homewards, rice ports are very dull. The East Indies are quiet for .all trades, and rates are inclined to ease. The Mediterranean is rather more active, but rates are down, Alexandria being done at 25s. to London, as compared with 39s. last week. The enquiry from America for grain tonnage has subsided, and the market is dull, excepting for some enquiry for coal vessels. Cotton rates are steady. The River Plate is firm, and owners are asking 67s. 6d. from San Lorenzo to United Kingdom for April-May, and 62s. 6d. for May-June, rates which represent some advance on the week. Later.—Since this report was compiled, north-east coast rates have further weakened. Tyne to London is now mentioned at from 7s. to 7s. 6d., and Rouen at 14s., whilst Rochefort has been fixed for at 18s. for a 3,500-tonner. The Mediterranean is represented by a 1,700-ton vessel fixed for Catania at 28s. Tyne to Algiers, 2,700, 27s.; 2,700, 26s. 6d.; 3,000, 21s. 6d., reported; Barcelona, 1,700, 26s. 6d.; Bordeaux, 5,000, 22s. 6d.; Caen, 1,500, 20s. 6d.; Carthagena, 1,500, 33s. coal, 38s. coke; Cape Verds, 2,400, 26s.; Calais, 600, 22s.; Gibraltar, 2,000, 24s. 6d.; Havre, 1,200, 19s.; London, 1.300, 8s.; 1,600, 8s., C.T.; 2,500, 8s., C.T. ; 3,000, 8s., C.T.; Las Palmas, 800, 23s.; 5,000, 23s. ; L’Orient, 900, 22s. 6d.; Leghorn, 5,000, 27s. 6d.; Marseilles, 3,000, 32s.; 1,000, 25s.; 26s., April; Malaga, 1,200, 25s.; Oran, 1,700, 28s.; 1,500, 26s.; 1,700, 25s.; 1,800, 24s.; Pozzuoli, 3,400, 39s., goods 40s., from Dunston and Elswick; Rouen, 1,400, 18s.; 3,000, 15s.; 2,200, 17s.; 1,200, 22s. 6d., coke; 1,800, 15s.; 1,400, 15s.; Rochefort, 1,300, 23s.; 2,000, 20s.; St. Vincent, 800, 26s.; Sicily, 1,400, 35s.; Valencia, 3,000, 25s. Cardiff to Brest, 1,000, 12s. 9d. ; Bordeaux, 3,500, 21 fr.; 3.200, 20 fr.; 2,000, 20£ fr.; 3,000, 19J fr.; 3,000, 19 fr.; 1.200, 19 fr.; 4,000, 18Jfr., 500; Barcelona, 2,800, 20s.; C'hantenay, 1,500, 18^ fr. fuel, 17| fr. coal; Caen, 1,900, 14s.; Cape Verds, 2,500, 21s.; Civita Vecchia, 4,000, 20s. 6d.; Granville, 800, 13s. 3d., coke; 1,200, 12s. 9d.; Genoa, 3.500, 21s.; 4,000, 20s.; Gibraltar, 1,800, 20s.. 9d.; Gandia, 3.200, 20 fr.; Havre, 1,050, 14s. 6d.; Honfleur, 1,300, 14s. 9d.; 1,900, 14s.; La Pallice, 2,700, 19 fr. coal, 20 fr. fuel; Lisbon, 700, 18s. 6d., 300; Marseilles, 3,900, 29 fr.; 2,600, 27 fr., March 27; 3,000, 25 fr., March 31; Monte Video, 4,700, 29s.; Nantes, 1,500, 17^ fr. coal, 18^ fr. fuel; 1.200, 17|fr., early April; Port Said, 5,700, 25s.; River Plate, 5,000, 29s.; Rouen, 1,800, 15s. 9d.; 680, 16s. 3d.; 1,100, 15s. 6d., April 6; 1,500, 15s.; 1,000, 15s.; 2,400, 14s. 6d.; 1,200, 14s. 6d.; 3,200, 14s. 3d.; 3,000, 14s.; 1,800, 14s. 3d.; Rosario, 4,700, 31s., part cargo; Rio de Janeiro, 4.500, 23s., 300, April -; St. Nazaire, 1,700, 18| fr.; 3,000, 171 fr- coal, 18f fr. fuel; 4,200, 15J fr.; Savona, 4,000, 20s.; Spezzia, 4,000, 20s.; St. Malo, 680, 12s. 6d.; Torre Annun- ziata, 4,000, 20s. 6d.; Zarate, 4,000, 32s. Swansea to Sables, 1,250, 19J fr.; Oran, 1,600, 30J fr.; Caen, 1,800, 15s. 3d.; 850, 15s. 3d.; Valencia, 1,700, 27s. 6d. ; 1,500, 25s.; Lisbon, 1,300, 19s. 6d.; Bordeaux, 2.300, 21 fr. ; 2,800, 201 fr., April 6; Spezzia, 3,000, 23s. coal, 23s. 9d. fuel; Rouen, 1,200, 16s.; 1,750, 16s.; 2,250, 16s.; 3,000, 16s.; 1,200, 15s. 9d.; 1,800, 15s. 6d.; 1,250, 15s. 6d., March 30; London, 2,400, Ils. 3d.; Brest, 900, 13s. ; Trouville, 850, 15s. 6d.; St. Malo, 500, 12s. 6d.; 700, 12s.; St. Servan, 800, 12s. 6d.; Genoa, 3,000, 23s. coal, 23s. 9d. fuel; Savona, 3,000, 23s. coal, 23s. 9d. fuel; Leg- horn, 3,000, 23s. coal, 23s. 9d. fuel; Castellon, 1,300, coal 27s., fuel 27s. 9d. ; Tonnay Charente, 2,100, 19 fr. ; Dieppe, 950, 15s. 3d., two voyages; 1,000, 15s.; Algiers, 5,000, 25 fr. coal, 26 fr. fuel, 1,000, April; Barletta, 1,900, 33s. coal, 33s. 9d. fuel; Havre, 1,400, 14s. 9d.; 900, 14s. 6d.; Chantenay, 2,800, 18 fr.; Caen, 650, 15s.; Calais, 950, 16s.; La Pallice, 1,050,( 18| fr. coal, 19 fr. fuel; Rochefort, 1,000, 18| fr. coal, 19^ fr. fuel; Fecamp, 900, 15s. 6d. Newport to Seville, 1,250, 19s., 250, April 6; Bordeaux, 4.000, 20 fr.; Sables, 1,350, 18J fr.; Nantes, 1,900, 18J fr.; Naples, 5,000, 19s.; River Plate, 5,000, 25s.; 4,600, 25s. Bristol Channel to Rouen, 1,200, 15s. 6d., option Brest or Treport 15s., option Clyde loading 2s. 6d. extra, voyages over three months. Port Talbot to Marseilles, 3,900, 29 fr.: Sables, 1,350, 184 fr.; Rouen, 1,900, 16s. ; 900, 15s. 9d.; 1,200, 16s.; 1,800, 14s. 3d.; 3,200, 14s. 3d.; La Pallice, 2,600, 19 fr. coal, 20 fr. fuel; Nantes, 1,500, 18 fr. Hull to Brixham, 750, 12s. 6d.; 1,000, 10s., f.d.; Dover, 1,000, 12s., free delivery; Rouen, 2,000, 18s. 6d.; Buenos Ayres, 32s. 6d.; Treport, 800, 19s., end March. Forth to Rouen, 1,700, 18s. Goole to Treport, 700, 19s. ; London, 950, 7s. 6d. Seaham Harbour to Dartmouth, 1.200, 14s. 3d. Glasgow to Rio de Janeiro, 4,500, 23s. Hartlepool to Leghorn, 5,500, 27s. 6d., 500; Bordeaux, 2,300, 20s. Wear to Bayonne, 2,400, 20s. ; Rouen, 1,700, 14s. 6d. Bly th to Havre, 1,300, 16s.