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distributed. These lamps indiscriminately placed in sockets without change in glassware further aggravate the situation.

The newly formed Lighting Sales Bureau as a part of the Commercial Section activities will no doubt treat with this general question of the proper application of the modern types of illuminants. There are two important committee reports to be submitted at the commercial sessions this year on this general subject, namely, Committee on Residential Lighting and Committee on Stores and Public Buildings. It will be proper,

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FIG 10-MODERN FACTORY CONSTRUCTION AND LIGHTING

One 400-watt mazda C clear lamp in enamelled steel reflector in center of each 25 (7.62 m) foot bay; spacing 25 by 25 feet; hanging height 14 (4.27 m) feet

however, to devote some little space in this report to the present trend in modern lighting practice. A number of typical examples illustrative of different applications are shown.

Industrial Lighting

The Safety First movement which has become so important in industrial operations has been influential in raising the standard of factory lighting, especially since it became apparent that

dumunation is one of the most important elements contrg to accident prevention and health conservation.

Important campaigns are being conducted on industrial light

a number of member con panies, and the subject will be treated rather fully at this convention in the Report of the Comtee on Industrial and Yard I ighting

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Mazda lamps 3-25-watt burning horizontally in semi-indirect fixture, supplemented by art glass portable lamp

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FIG 13-PROMINENT CHURCH, NEW YORK CITY

Old central chandelier with multiplicity of lamps has been removed and modern methods substituted.

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Flood Lighting

There has been an extremely rapid growth of the commercial applications of focus type mazda lamps. Laboratory and manufacturing departments have made advances in improving the quality of these lamps. The Panama-Pacific Exposition was lighted to a great extent by this method and to all who viewed its beauties the possibilities of flood lighting were apparent.

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For general use there have been two principal types of units selected. One employs a 500-watt mazda C flood-lighting lamp and large parabolic reflector, giving a rather concentrated beam, very useful for projection at distances of 100 feet or more. The second unit takes a 250-watt focus type lamp. The reflector is smaller and the beam widened somewhat, meeting the requirements of illumination from comparatively short distances. A few

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