January 2, 1911. THE COLLIERY GUARDIAN. 39 The book is well and profusely illustrated, many of the figures being full-page plates. The first part of the book, up to p. 134, is taken up with the outlines of anatomy, physiology and first-aid treatment. The subjects of transport and the work of voluntary aid detachments is exhaustively treated, but the space given (pp. 135-216) is hardly justified. A large portion of this section is taken from the Journal of the Royal Army Medical Corps. The subject matter throughout is accurate and clearly written, with the exception of some remarks on treat- ment. The treatment advocated is not always definite enough from the first-aid point of view, and the reader is told that one of many courses may be taken. For example, in the treatment of bleeding (p. 72) :— “ Bleeding from a cut vein may be arrested by any of the following methods ” “ Bleeding from an artery may be arrested, according to the severity of the bleeding, by one or other of the following methods:— . . ” The fundamental importance of pressure in the treat- ment of bleeding is not insisted upon enough. Bleeding must be arrested by pressure, and this advice should be clearly given in large print. In the treatment of burns, the use of carron oil is still advocated. All oils, when kept for any time, are apt to become dirty and rancid, and, as a consequence, unsuitable for the treatment of wounds. The modern treatment of burns consists in the application of a solution of picric acid, which can be kept pure for an indefinite time. There is a very useful chapter on the after-treatment of ambulance cases. The last part of the book is occupied by remarks on the St. John Ambulance Asso- ciation, by a translation of the Geneva Convention, and by a chapter on the organisation and management of ambulance classes. The book is concluded by a series of test papers on first-aid. The book can be confidently recommended to advanced students, to all secretaries of ambulance classes, and to all interested in voluntary aid detachments. From the point of view of the mining profession, the book is a little disappointing. “Mechanical World” Electrical Pocket Book for 1914. 311 pp., 129 pp. 4 in. by 6 in. Manchester and London : Emmott and Co. 6d. net. This popular and inexpensive annual has been con- siderably improved, much of the matter having been rewritten and expanded. The section on electricity in coal mines is up-to-date, and quite good. The Year-Book of the Scientific and Learned Societies of Great Britain and Ireland. 1913. vi. + 380 pp. 5J in. by 8J in. London : Charles Griffin and Co. Price 7s. 6d. net. To many scientific workers this annual, giving as it does a record of the work done in science, literature and art during the previous year, is indispensable. With the complete set of 30 volumes, many a library could be cut down to half its size or less. History of the Salt Union. By A. F. Calvert. 5 in by 8J in. xxxviii 4- 286 pp. London : Effingham Wilson. Price 5s. net. The British student of trusts has few opportunities near home of prosecuting his researches, consequently a detailed account, such as this, of the rise of a union endowed with monopolistic powers, is of singular interest. The Salt Union was formed in 1888 with the frank intention of controlling the salt supply. The subsequent history of the union has very far from justified the early optimism of the promoters, and the significant feature of Mr. Calvert’s work is his exposure of the unsound methods of valuation and finance upon which the combination was founded. He extends his attack to the present policy of the board—notably in the agreement with Messrs. Brunner, Mond and Co. The body of the book, perhaps, has the demerit, from the popular standpoint, of being too documentary, but this method, which is intentional, has the merit of allowing the union to damn itself out of its own mouth —the strongest mode of criticism—and of adding considerably to the historical value of the book. Business Prospects Year Book, 1914. Edited by Joseph Davies and C. P. Hailey. 5 in. by 7J in.; xiv. + 235 pp. Cardiff : The Business Statistics Company. Price 10s. net. The authors of this acute little annual believe that the coal trade will again experience a prosperous year in 1914, that the average market price will be slightly lower than in 1913, but higher than in any other year since 1907 ; wages at the collieries will be maintained at a high rate, but work will be more irregular than it has been since 1911; and colliery companies will—owing to their contracts—-make exceptional profits, which means that many in the coal trade will read the forecast with infinite satisfaction. . The book covers a wider ground than that conserved for the coal trades, dealing with prospects in the iron, copper, tin, tinplate, oil, shipping, cotton, rubber industries, &c., and constitutes, as a whole, an accurate statement of prevailing conditions. The price is rather high. WORKING OF THE GOAL MIMES ACT DURIMG 1912. In Part II. of his General Report on Mines and Quarries, Mr. R. A. S. Redmayne, H.M. Chief Inspector of Mines, deals briefly with the experience so far gained in the working of the Coal Mines Act, 1911, which came into force on July 1, 1912, with the exception of certain provisions, the operation of which was delayed until subsequent dates. He says the work involved in com- plying with the Act has been very great, especially in respect of old and backward collieries, and a great strain has been imposed on the managers, due not only to the far-reaching effects of this Act and the Orders arising therefrom, but also from the fact that it came into force about the same time as the National Health Insurance Act and the Minimum Wage Act, all being Acts which require the close and almost continuous attention of colliery officials. The majority of the provisions of the Act having been in operation only for six months, it is too early to draw conclusions as to the extent to which these provisions have been instrumental in preventing accidents and improving the health of the persons engaged in the industry. Firemen, Examiners, and Deputies There were 48.775 candidates for certificates, of whom 45,794 passed—20,624 obtaining the full certificate. It will, of course, ba realised that the number of persons who obtained the certificate is far from being an accurate criterion of the number of firemen, examiners and deputies employed in the United Kingdom, for many persons who did not occupy the position were applicants for the certificate, e.g., young men desirous of attaining to the position, mining apprentices and under- ground officials other than firemen. The scope and meaning of the proviso to section 65 as to inspections during continuous shifts having been mis- apprehended in some quarters, Mr. Redmayne thinks it is desirable to call attention to the Home Office view of the matter. The proviso was inserted in the Act in accordance with the recommendation of the Royal Com- mission on Mines, who intended it to be in substitution for, not in addition to, the general recommendation of two inspections a shift, and this is the interpretation which the Home Office puts upon the section. In this case a report of each inspection must be made in the manner required by section 64, and the proviso must only be regarded as applying where shifts change at or near the face so that work is carried on without any interval. The less stringent requirement in the case of continuous shifts is of course justified by the fact that as the face is continually advancing there is not the same danger as where the working place has been left for a period; also that the outgoing men are able to inform the incoming men of the actual state of the working places. The points raised were:—• 1. Must a deputy make two inspections during each of his shifts where there is a succession, or continuity of shifts, or 2. Is it sufficient that each working place and all parts situated beyond the meeting stations, &c., be inspected every five hours ? With regard to these points it is sufficient that each working place and all parts situated beyond the meeting stations, &c., be inspected in the manner provided by section 64 every five hours. 3. Is it permissible for an overman, or other official superior to the deputy, to make inspections during shifts in place of the deputy, provided he enters the result of such inspection in a deputies’ report book ? The deputy’s inspection is in addition to any inspec- tion that may be made by the overman. The words {( a similar inspection” in section 65 must be understood to mean an inspection by a fireman, examiner or deputy as in section 64, and by section 14 a person employed as a deputy cannot (with certain exceptions) be employed on duties other than his safety duties in his district. The intention of the Act is that a deputy’s district should be of such a size as to allow him to get round twice during the shift. (In one sense, of course, an overman is an examiner, but the term “examiner” is used in the Ac^ pi that sense in which it is applied in the Bristol district to deputies.) 4. Must both inspections in each shift, or all three inspections in the fore shift, be made by the same deputy ? The answer to this is that there is nothing in the Act to prevent a change of deputies during the course of the working shift. Searching of Workmen for Matches. In the Newcastle district, up to the end of the year, no uniform scheme of searching had been established, and in some of the other districts the managers either did not fully understand that the search had to be a daily search, or had adopted different systems. Steps have since been taken to institute a uniform system on the lines indicated above in all the coalmining districts. Mr. Redmayne has been informed by the inspectors, colliery managers and others that the result of the searching has been to find that the cases of men having in their possession the prohibited articles have been far more numerous than was anticipated. In many cases there can be little doubt that men have quite inad- vertently carried the matches, &c., on their persons and without any intention of making use of them in the mine. But the fact is disquieting and points to the great necessity of the daily search being rigorously and carefully carried out. Ventilation. Sampling the Air of the Mine.—This necessitated a great deal of work, and although 1,836 samples were taken between July 1 and December 31, the work was by no means completed by the end of the year. Although generally the analyses have shown that the mines in the different districts throughout the United Kingdom are well above the standard required by the Act, there were some cases in which this was not so. The work of sampling has undoubtedly already resulted in good. Arrangements for Reversing the Air Currents.—At mines to which section 31 (3) of the Act applies, this requirement came into operation after January 1, 1913, and at a number of mines compliance with the require- ments was secured by altering the fan casing, so that the fan while continuing to revolve in the same direction will draw in fresh air at the centre and eject it from the periphery over the casing into the upcast, and so act as a forcing instead of an exhausting fan; but in many cases extensive structural alterations have had to be made, and in others entirely new fans have had to be erected. Many collieries, especially in Scotland and in South Wales, had not completed—some had not even commenced—the work necessary for compliance with the Act in this respect by the date named. In the majority of these cases either the necessary work would take longer than the time allowed or the management could not obtain delivery of the fans from the makers. In cases where it could be clearly shown that real difficulties existed in the way of complying with the Act within the time named, the divisional inspectors have met the owners in a reasonable spirit and granted an extension of time wherein to comply. In nearly every case the means provided for reversing the air current have been a fan or fans. In a very few cases a waterfall in the shaft has been found to be adequate, but in others it has been tried and found inadequate. In some cases, notably in the smallermines of the Southern division, steam jets have been placed in the upcast shaft; and when the divisional inspector has been satisfied by experiment that the apparatus was efficient, he has allowed its use. In this connection Mr. Redmayne adds that, as cases have come to his knowledge in which the management of the colliery appear to have been in doubt as to what the Act actually requires, the means to be provided must fulfil these conditions : (a) they must be capable of being put into operation immediately ; (b) they must be such as will allow of the reversal of the air-current in the roadways of the mine as well as in the shafts ; (c) they must be adequate for the purpose—that is to say, they must be such as will allow of the reversal of the current taking place within a reasonable time. It has sometimes been suggested that the reversal of the air-current would tend to dislodge the fine coaldust accumulated in the roadways of the mine, and carry it towards the shaft; but Mr. Johnstone remarks that he has “ made careful enquiries about this, and in no case had the alteration of the direction of the air the slightest effect on the dust.” This statement is based on the results of many experiments with the reversal of the air-current at collieries in his division, particulars of which were kindly sent him by the colliery agents. Surveyors. Nine hundred and twelve managers’ certificates have been endorsed,, and 898 certificates given by the inspectors to surveyors already employed. The Care and Treatment of Unimals For the first time in the history of mining, a census of animals employed underground has been taken, with particulars respecting the death-rate from injury and disease, and cases of injury and ill-treatment. The result of this census is set out in a table which has already appeared in the Colliery Guardian. Mr. Redmayne thinks it is very satisfatory to note how small is the number of cases of ill-treatment, namely, only 0*33 per cent, of the total number of animals employed. A general difficulty has been experienced in procuring a suitable eye-guard for the horses and ponies, for while