Light and lighting . ote th little time hack the Port of Lond< n Authoritymade arrangements equip its policeforce with an electrical illuminant. The Authority have lately accepted a tenderfor the supply of an estimated quantityof 600 dd/eii dry batteries for the electric torches adopted for the dock torches are found to work satisfac-torily, aid are considered to be much D the lamps which they BUper--• did- II r Gazettt. -Ian. 13th. THE ILLUMINATING ENGINEER (feb.) 71 HALF-WATT LAMPS IN ALONDON STORE. While so much is being said about thepossibilities of the new half-watt lam
Light and lighting . ote th little time hack the Port of Lond< n Authoritymade arrangements equip its policeforce with an electrical illuminant. The Authority have lately accepted a tenderfor the supply of an estimated quantityof 600 dd/eii dry batteries for the electric torches adopted for the dock torches are found to work satisfac-torily, aid are considered to be much D the lamps which they BUper--• did- II r Gazettt. -Ian. 13th. THE ILLUMINATING ENGINEER (feb.) 71 HALF-WATT LAMPS IN ALONDON STORE. While so much is being said about thepossibilities of the new half-watt lampsit is interesting to notice that thereis one place in London where quite anumber of these lamps have been installedand have been in operation for sometime. measured on the occasion of our light yielded by the new lampsis distinctly whiter than that of theordinary tungsten lamps consuming about1*2 watts per candle. In walking fromthe rooms lighted on the old style intothose lighted with the |-watt lamps,. The photograph shows a picture ofHarrods Stores (Brompton Eoad, W.),where the end three rooms are lighted byabout fifty lamps in diffusingglass globes. The consumption in theserooms is stated to be about 2 watts persquare foot. The illumination is naturallyvery bright, values of 8-16 at aheight of about 3 ft. from the floor being the difference both in colour and bright-ness was quite evident, the delicateshades of silk, &c, being chiefly seems probable that the introdud ionof these lamps will lead to a general risein the standard of illumination in largestores where display-lighting is aimedat, and their general use will raise entirelynew problems in illumination. 72 THE ILLUMINATING EXciXEER (feb.). SCHOOL LIGHTING. By E. H. T. Nash, , Medical Ofticbb to the Borough of Wimbledon.* In the first part of this paper Dr. vsummaris early work <if Cohn ami others on School Lighting, andrefers to tin- regulations in variouscountries
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