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THE EXPRESS LIFT CO., LTD.
WITH WHICH IS INCORPORATED THE DOBINERS OF
SMITH, MAJOR & STEVENS, LTD
EXPRESS SMS
LIFTS
MODERN LIFTS
FOR
MODERN BUILDINGS
SPEEDY RELIABLE SERVICE
FOR DETAILS APPLY TO
THE G.E.C., QUEEN'S BUILDING, CHATE ROAD.
EVERYTHING
Copyri
The
G&C ELECTRICAL
PERMANOID
a Berge Produt
ALUMINIUM PAINT.
-DOES NOT TURN BLACK WITH
AGE- - BUT REMAINS ALWAYS
BRIGHT AND SILVERY.
W. R. LOXLEY
& 00.
YORK BUILDING, CHATER ROAD.
Atkinso
Eve Lom ICES
Members of the C-NIA.
HONG KONG DAILY PRESS.
RDAY APRIL
ENGINEERING AND
BUILDING
CURING CONDITIONS SWEDISH ENGLISH ATMOSPHERIC
OF CONCRETE.
COMPARISON OF VARIOUS METHODS.
WHAT STATE SURVEYS HAVE REVEALED,
CO-OPERATION.
POLLUTION
ELECTRICAL ENGINEERING RECORDS OF IMPURITIES.
IN COCHIN INDIA.
HINDU STATE PLANS TO UTILISE COUNTRY'S, WATER POWER.
NO MATERIAL REDUCTION SHOWED BY STATISTICS,
New Apparatus and Methods, During the year the investigation. into a new method for the routine determination of sulphur in the air- was completed. It depends on passing a known volume of air through solution of hydrogen proxide, the amount of sulphur acids absorbed by the solution be ing determined by simple titration.
The National Physical Laboratory completed an investigation of an instrument. for measuring day-
DEAN INGE AND THE EVIL ONEM
BEGIES IN MALIGNANT POWER.
Christ never seemed in dilate on
sin exoept in comection with for. giveness. He moved among men as
other image is confined to a portion at all, and we may ask whether it image the printing intensity of the of the visible spectram. In each is our duty to be wretched."7 holes diminishes along the row. By noting the last hole of each series
tained of the relative intensity of visible in the developed print, measure on an arbitrary scale is ob the two kinds of radiation during the time of exposure, and these in made of the variation from day to wore written for edification, we dications enable an estimate to be day throughout the year in the total cannot misa traces of geniality, amount of daylight received dur-humour and irony which would ing the period of observation, nor-
man of sorrows," but not an unhappy man,
"In the Synoptic Gospois, which
and frequently.
Laboral theologians may jeer and philosophers acoff, but there is jis. We cannot get rid of the Devil.
Deliver us from the Evil One light.. Light... taken from the is the right translation," said Doan whole sky is passed through an Inge, preaching at St. Mark's, optical wedge in contact with The seventeenth report on Atmos, which is an opaque metal plate por have not the slightest doubt.
North Audley-strant, W. There are still many problems regarding the preparation, the
pherio Pollution, issued by the forated with a series of mall holes treatment and the resulting proper
Mr. Bo Hellstroom, the Landon Department of Scientific and Indus a line. The intensity of the he said that Christians are per- Erin Research (HM. Stationery light transmitted by these holes mitted to believe in a positive, bica of concrete, which must be representative of the Swedish solved before engineers can be said Bureau of Hydro-Electrical Con Office, S. Bu not), gives records of varies from one end of the line to
malignant spiritual power." the amounts of tar, soot, and other the other accordano with the to have a full knowledge of this struction has been Warking out his
varying density of the wedge,
"We are in the season of Lent, material. Among other bodies, the report from his vidit to the Hiufli impuritios deposited during the point to. Noint. By means from American Soofbly for Testing State of Cochin in India, where ear ended on March 31 last at 98 split lons, the two halves of which when at every service we pray Materials dovotes a great deal of, the Government is planning the surving stations situated in 12 are suitably separated, two images that we may worthily lament, our different cities and towns in Greata sheet of photographic paper By sins and acknowledge our wretched." of the row of boles are formed on attention to the many phases of this utilization of the nation's water Britain, mostly in industrial areas, placing suitable filters over the subject, and at its 34th manual power resources. Mr. Hollstroem The solid matter deposited or corresponding halves of the lens the heas Sir Oliver Lodge has told mesting, held recently in Chicago, in a newspaper interview stated brought down by rain averaged befund to the ultra-violet part of the man is not worrying about his sins radiation forming an image is con-ua-too truly, I fear-that modern a series of reporta and papers were that he found the little state of tween 200 and 300 tons & square spectrum, while that forming the presented which may certainly be Cochin a very progressive country milo, but at one station in Burnley considered to have added to the with enlightened rulers, and he did it rose to 380 tons, while at Western stock of available information.net se a traes of the much talked Park, Leicester, it barely exceeded
The curing of concrete, or the of depression. The sum of about 2 tons. catablishment of the most favour- £355,000 needed for the harriessing able conditions possible for its of the great waterfall at Poringal that at about two-thirds of the An analysis of the results showa notting and hardening, has engaged kuthu will easily bo forthcoming. stations there was a reduction in the attention of a sub-committee and in co-operation with Messrs. the amount of impurity deposited; of the Society for some time, and Rendell, Palmer and Tritton of as compared with the average for at the mosting referred to, a report London some 20,000 Hp, will read (generally), the five preceding years, was presented on its behalf, apitely be obtained from the fall. The the remainder showing either an mising the experiences with present rapidly advancing hations of the increase or no improvement. methods and directing attention to West Coast of India are devating most remarkable improvement wassical Laboratory also continued had had a Boswell to write His life. The milly 24 hours. The National Phy probably be more priminent it He results obtained in recent research much time, money and energy in in respect of sulphates, the deposits work on the determination of water I am convinced that God did laugh, work. It has been a general belief their efforts to modernize their of which showed a reduction at es
in fog, that the best conditions for caring countries and become self-support- stations, though,at six there was
(Continued on Page 11.) concrete are usually afforded. bying agriculturally as well as in an increase. In tar and sulphates surrounding the mass with warm dustrially. Mr. Hellstroem, felt taken together there was an inoreass" moist air for the purpose of that much could be gained by a as four stations; at one of these, avoiding loss of moisture, while if still closer co-operation between Ravenscourt Park, London, the in- additional supplies of moisture British and Swodish interests in should be needed they would be thus these parts of the world.
crease in the sulphur deposit was available in the atmosphere pro
relatively very high, the sulphates vided. It has been difficult, how-
amounting to "990 per cent. of the ever, to evaluate the differences in Though effective, this method has general average... the quality of concrete resulting obvious disadvantages. It requires
Smoke and Fog.. from different conditions of curing, much water, which frequently is Records of the impurity suspend- because the principal effect is really scarce; covering, materials may be ed in the air were obtained by. upon ita, durability, any chaagsgin difficult to prosure, and their use means of an automatic alter at over which, of course, only becomes ap is not conducive to rapid and effec a dozen stations. Those for Coven- parent after the lapse of a longtive inspection. Other..methods have try indicated an unusually pure"] period of time. The effectivenĉas been, therefore, introduced, and are atmosphere for a city of that size, of curing methods, the report now employed to overcomo such dif. atatos, can only be determined by ficulties.
there was no single day on which tho indirect processes of studying
smoke haze was recorded This re- the capacity for retaining moisture.
sult seems almost too good to he strength, volume changes and sur
true, but the report states that is face conditions. The investigations
la London, during the winter. must be taken as reasonably correct, on the subject of the retention of
months of 1900-31, a thickish smake moisture have not yet roached such
hate was recorded at Westminster, astage that this property can be used as an index for the comparition properties of such films has Westminster Bridge there was a City Hall on 136 days, while at son of methods. Deductions have been mainly obtained by investiga similar haziness on 78 days, at therefore to be based upon the other tions in the laboratory, by means Victoria-street on 3 days, and at properties specified,
of successive weighings of speci- Kew, however, only 19 hazy days South Kensington on 38 days. At mens over prolonged periods.. parimunta of actual roads have the Glasgow stations recorded on were recorded. In the same months shown the method to be quite as the average 30 hazy days, while effective as wet canvas covering in Blackburn bad 13 and Stoke-on- proventing loss of moisture during Trent 10. the first day, and more effective. than any other method, excepting difficult to account for the general The report remarks that it is web earth, during the subsequent optimistic belief in the reduction curing period. Laboratory and of smoke fogs in London, as there field tests have established that does not appear from the deposit, bituminous coverings are satisfac records to have been any material tory from the standpoint of strength reduction in pollution during the and impermeability, if applied last 10 years. When conditions oc- over the entire external surface our which prevent the escape of Burface hardness tests of pavements smoke from the city and it accumu so treated have not been carried late, either in the streets or over out to an extent sufficient to war head, to form a fog, small varia rant any definite conclusions, but tlons in the actual rate of amission since concrete so treated has been of smoke do not seem to be of great. in used for some years with importance. For example, sufficient out entirely "Tosing the bitu- minous conting, the indications are two or three hours of a winter morn- smoke is omitted in London during that the surface conditions aring to produce the binckest fog of satisfactory. Surveys on several
American Methods.
To cure concrete used in road making, or for pavements slabs, the method used most extensively in the United States has been to cover it entirely with sacking, which was kept soaked. Subsequently; for the remainder of the curing period this was usually replaced by wet sarth, straw, sawdust or hay. When such materials are thick enough and kept uniformly wet, there is little likelihood of moisture being lost from the concrete by ovaporation.
mittrued on aṭni Volämä.)
COMPLETE ELECTRICAL INSTALLATIONS
with
C. M.A. CABLES.
Advice and "Estimates given
free on all
types of
LIGHTING & POWER INSTALLATION
by an experienced
ELECTRICAL ENGINEER
" retained at our Hong Kong Branch
The General Electric Co. (of China), Ltd.
QUEEN'S BUILDINGS,
HONG, KONU.
Retention of Molature., Moisture may be retained within setting concrete by the application of a butiminous coating. The in- formation available upon the retea
in
ng
Ex-
12
and, in the period under review
car.
State highways have revealed about which there is any experience, twice as many transverse oracics provided it fails to be
bituminous-cured pavements,
ried
and BWAY,
given that in those cured by other the atmospheric conditions A10: methods. This, it is concluded, is suitable for this accumulation. A due to the fact that the black sur- reduction by one-third in the rate, face absorbe, or radiates, heat much of smoke emission would probably more rapidly than it is conducted appear, simply as a delay in the through the mass of the conarete, formation of the fog; that is, if this apparently giving rise under previous conditions the smoke large temperature variations with density in the fog attained its in the body of the concrete. Thy maximum in two hours, under the painting of the top surface with a new conditions it would take three light-coloured material has been hours. As the winter of 1930-31 ap-i found effectively in reducing thess temperature stresses,
to
Application of Calcium Chloride.
peared to be providing an unusual, sequence of foggy weather, the figures for it were compared with those for previous years, the station at Westminister Bridge being select The surface application of ent- ed as having the most consecutive cium chloride has also been found sequence of records obtained by the to afford effective protection, The Automatio Altor, which gives a
alb, being delique cont, absorb moisture from the air and dig solvós, forming a film reistant to evaporation, The, maccess attained
direct indication of the amount of black sooty matter in the air. The highest record of the day during November nad December was plot by this method is naturally denen ted on a curve together with the dont upon atmospheric conditions, highest for the same months of 1922, It allows the concrete to mature to. year which for some reason mark askatastory irength and theed the end of rapid improvement volume changes are not of import of the sir à, comparison of the ance in-comparison with attendant winter of 1900 with that of 1022 upon wet-earth curing Where at shows more and worse smoke fogs, mompherio, conditions are such that particularly in December, when they the complete solution of the salt were much more numerous in 1990 has been ensured, satisfactory re than in 1907 and the level of in- sults have been always produced purity was also higher)
Use Green Island Cement
for
Constructural Work of
Every Description.
ROW GREEN ISLAND CEMENT IS MADE
Green Island Cement is manufactured from hard limestone and clay. It is necessary that these materials should be finely ground in order that they may come into intimate contact with one another in the burning process.
The finely pulverised materials are mixed in a certain definite proportion, roughly one part of clay to three of limestone, and are fed to the Rotary Kilns:
In these kilns they meet the hot gases and flames generated by pulverised co
coal blown in at the other end of the kilns, and after var chemical actions have taken place, they combine to for
form Portland Cement Clinker.
The Cuker is ground down with a small percentage of gypsum to regulate the setting time, and Green Island Portland Cement is thus produced.
Although, sounding so simple, in reality the process is an intricate combination of mechanical, physical and chemical operations, needing great skill and care. Nothing but constant and accurate supervision will yield the results go well-known with Green Island Cement, namely, strength, uniformity and reliabilit
USE GREEN ISLAND CEMENT
Issued by the
GREEN ISLAND CEMENT CO LTD.
END FLOOR
EXORANGE BUILDIN
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