Show old sol declared to be unreliable light plant the light received from the sun Is c exceedingly variable in quantity and quality even in the open country chere here human activities do not inter fere with the lie supply during half of each 4 hours on an average it falls fails entirely during the remaining hours it undergoes a progressive progress lv e change due to the varying height of the sun suit atilt and irregular cli changes aDgeS caused by the presence of dust clouds anil and other obstructions no sane engineer would dream of installing in an artificial lighting system that was subject to such excessive and erratic fluctuations as Is this much lati lauded led light of day hven even the candles and oil lamps of a thousand years n no ago o were far superior light sources to 0 the sun in one respect their light was under control and could be kept reasonably constant the various kinds kind of f artificial light we possess today are collectively superior to sunlight in most respects and the illuminating art like most other arts Is advancing at a ste stead ad lly ily accelerating pam paco the improve ments of oe the next 25 years will probably be much more startling than those ot of the 1 last ast 50 calvin frazer in taylor lycos rochester |