Janské Lazne (Johannisbad), in Giant's Mountains, also possesses

V

the warm

springs (29° C.). Luhacovice, in Moravia, possesses an inhaling establishment with modern installations for treating chronic catarrhs with its gaseous mineral waters.

There are many resorts in Slovakia, but they are mostly unknown outside Central Europe. The majority of the foreigners who frequent them are Hungarians.

Pist'any, one of the State-owned spas, possesses a remarkable curative thermal mud which is thrown up volcanically. It collects in the basin of the hot springs forming a soft mass which may be used as compresses. For home treatment the mud is dried, pressed and preserved in cubes. These cubes do not give rise to decomposition products on re-treating with water. The dried mud is stated to have a radioactivity of 3,200 Mache units per kilo.

SEPTEMBER 9, 1927.

Trencianske Teplice also possesses warm radio active mud which has a temperature of 36-52° C. There are seven mineral springs issuing from cleft limestone formations; six of them flow into the natural hydro-therapeutic basins whilst the other one is used for drinking purposes. It is sulphurous but not unpleasant. In addition to the six large natural baths into which the hot waters rise, there are numerous single basin baths into which the water is diverted without the use of pipes. It is impossible to empty some of the baths and keep them empty, so great is the flow of thermal water which in one case amounts to 4,000,000 litres daily. The mud, which can either be used in the " tub " baths or applied locally, is inorganic and is remarkably efficacious. These natural remedies are further augmented by carbonic acid baths and physical and electrical treatments. Trencianské

General Notes.

WEEKLY COAL OUTPUT.

Many comments have been made upon the drop in the output of coal for the week ended July 23 as compared with the output for the week ended July 1. This decrease was, in fact, 458,000 tons, but the commentators do not appear to have noticed that in the district of Scotland alone there was a drop of no less tha 494,700 tons. This, of course, is accounted for by the fact that the annual holiday took place during the week.

The output actually shewed an increase in Northumberland, Durham, Yorkshire, Stafford, Worcester, and Warwick, and had the Scottish output not been reduced there would actually have been an increase in the total output of the country for the week. BOARD OF TRADE ANNOUNCEMENT. DYESTUFFS (IMPORT REGULATION) ACT, 1920.

The following statement relating to applications for licences under the Dyestuffs (Import Regulation) Act, 1920, made during July ,has been furnished to the Board of Trade by the Dyestuffs Advisory Licensing Committee.

The total number of applications received during the month was 641, of which 480 were from merchants or importers. To these should be added 26 cases outstanding on the 30th June, making a total for the month of 667. There were dealt with as follows:

ranted--578 (of which 532

were dealt

be presented and discussed. This is apparently the first international conference of its kind. Intending participants can obtain special rail and visé facilities. The secretary will be glad to supply further information, letters may be addressed to Prague I, Staromestské nám. 16.

BOARD FOR MINING EXAMINATIONS.

Examinations for First and Second Class Certificates of Competency as Managers and Under Managers of Mines will be held on 23rd and 24th November, 1927, at Edinburgh, Newcastle-on-Tyne, Sheffield, Wigan, Cardiff and Birmingham.

The written part of an Examination for Certificates of Qualification as Surveyors of Mines will be held at the same centres on 24th November, 1927.

Applications for the necessary forms should be made not later than 11th October, 1927. In order that appropriate forms may be sent, it is important that candidates should state whether they have already sat at one of the Board's Examinations.

the

Letters should be addressed to Secretary Board for Mining Examinations, Mines Department, Dean Stanley Street, Millbank, London, S.W.1.

THE SIR JOHN CASS INSTITUTE.

We have received the Syllabus of the Sir John Cass Technical Institute for the coming session. It gives details and information concerning the courses of instruction in the various pure and applied sciences, etc. The Inorganic and Organic Chemistry Departments are particularly strong and from time to time original scientific work from these laboratories appears in The Chemical News. The session commences on September 19.

EMPIRE MINING AND METALLURGICAL CONGRESS. VISIT TO CANADIAN MINERAL BELT. The members of the Empire Mining and Metallurgical Congress now touring Canada spent last week investigating the great belt of mineralised country, one thousand miles in length and three hundred miles in width, from North-Western Quebec to Central Manitoba.

In this belt are what are claimed to be the world's greatest nickel mines and vast deposits of gold, silver, copper, cobalt, arsenic, lead and zinc.

His Majesty's Consul-General at Cologne (Mr. W. N. Dunn) informs the Department of Overseas Trade that according to figures issued by the Statistical Reich Office and published in the "Deutsche Bergwerkes Zeitung" of August 9, the production of potash salts amounted to 94 mill dz. (1 dz. -100 kgs.) actual weight with 12.6 mill dz. pure potash Thus the potash output as compared with 1925 has decreased by 21.9 per cent.. but is still considerably higher than in 1924 and comparatively speaking, falls little short of 1913. The rationalisa

tion of the potash mining industry is seen from the fact that of the 288 potash works to which a participation figure has been allotted, only 66 participated in the output of 1926 on a monthly average as against 85 in 1925 and 126 in 1923. Sales in potash salts have decreased from 43.26 mill dz. with 12.25 mill. dz. pure potash in 1925 to 38.94 mill dz. with some 11 mill dz. pure content or 10 per cent. Of the amounts sold in 1926, 26.35 mill. dz. with 6.94 mill. dz. pure potash were sold on the home market and 12.59 mill. dz. with 4 mill. dz. pure potash abroad. The decrease as compared with 1925 amounted to 11.5 per cent. as regards export sales and 9.5 per cent. as regards inland sales.

Abstract Published.

273,440.-Separating sodium stannate from sodium arsenate and antimonate. Harris, H, 62, New Broad Street, London.

Mixtures of sodium stannate and sodium arsenate, with or without sodium antimonate, are treated, in the cold, with caustic soda solution of such strength as to dissolve only the sodium stannate, the resulting solution being separated from the residue, and the latter being treated for the recovery of pure sodium arsenate. When treating mixtures consisting only of sodium stannate and arsenate, the solution used may contain from 100 to 250 grms. of caustic soda per litre, but when the mixtures contain free caustic soda, and salts such as sodium chloride or sodium carbonate, as is the case, for instance, with mixtures obtained by the processes described in Specifications 213,638 and 245,479, the strength of the caustic soda solution may be reduced. For example, a mixture containing 5.1 per cent. sodium chloride, 5.8 per cent. sodium carbonate, and 3.5 per cent. caustic soda, may be treated with a solution containing 58 grms. of caustic soda per litre.

The Latest TRADE MARKS

This list of Trade Marks of interest to Readers has been selected from the Official Trade Marks Journal, and is Published by permission of the Controller of His Majesty's Stationery Office.

INDICOL. 481,141.-Chemical substances prepared for use in medine and pharmacy.-William Francis Mildren, 153, Fisherton Street, Salisbury. Aug. 24th.

AMPACOIDS. 482,031.-Chemical substances prepared for use in medicine and pharmacy.Reed & Carnrick, 155, 157, and 159, Van Wagenen Avenue, Jersey City, State of New Jersey, United States of America. August 24th.