. Light and lighting. p; caused by thecalling up of reserves and territorialfort es. All those who are able to assist in theserespects are asked tn send their namesin to the get retary of the Institut on(Victoria Embankment, London SAW) without THE ILLUMINATING ENGINEER (sept.) 459 THE LIGHTING OF A MINIATURERIFLE RANGE BY GAS. The accompanying illustration is repro-duced from a photograph kindly put atour disposal by the Gas Light & Coke Co.,and is of special interest at the presentmoment. It shows the gas lighting in theminiature range of the Marylebone RifleClub, where there are two
. Light and lighting. p; caused by thecalling up of reserves and territorialfort es. All those who are able to assist in theserespects are asked tn send their namesin to the get retary of the Institut on(Victoria Embankment, London SAW) without THE ILLUMINATING ENGINEER (sept.) 459 THE LIGHTING OF A MINIATURERIFLE RANGE BY GAS. The accompanying illustration is repro-duced from a photograph kindly put atour disposal by the Gas Light & Coke Co.,and is of special interest at the presentmoment. It shows the gas lighting in theminiature range of the Marylebone RifleClub, where there are two rows of targetslighted by screened gas lamps. The or dazzled by any exposed lights. Themetal shields—of which one has beenremoved temporarily in order to showthe arrangement of the lights—screenthe direct source of light entirely fromthe eyes of those firing. The targetsthus stand out brightly illuminatedamidst black surroundings. Another feature of interest is that thelamps are controlled from the end of the. intention in this case is to produce apowerful but even illumination all overthe targets, each one receiving the sameamount of light. The targets slumldnaturally be more brightly lighted thantheir surroundings. It is a well-knownprinciple that the eye is m< st readilyconcentrated on the brightest object inthe field of view, and it is equally impor-tant that the eye should not be fatigued room where firing takes place. As ameasure of safety this is very desirable,since it removes any likelihood of a personbeing at the target end in order to turnup the lights while firing is on. It alsoenables the Range Master to turn off thelights immediately each detail has firedand to turn them up again when practicerecommences—which of course makesfor economy. 460 THE ILLUMINATING ENGINEER (sept.) HOLOPHANE GLASSWARE IN THEEAST. We notice, in a recent issue of Holo-phane Illumination, some account of thedevelopmeni of illuminating engineeringin the T In the Treaty Porta (if Ch
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