558 ARTIFICIAL ILLUMINATION 



Some Things Not to Do. — Do not run lights irregularly. Do 

 not underfeed the birds with grain. Do not forget to water the 

 birds when the lights are first turned on in the morning. Do not 

 turn lights off too early in the spring. Do not turn lights off quickly 

 in the spring. Do not stop feeding early and late when lights are 

 finally eliminated. 



The Evening Lunch. — The Poultry Department of the New 

 Jersej^ Agricultural Experiment Station has experimented for a 



Fig. 239. — Curve showing results of illumination on pullets. 1,200 pullets were included in 

 the experiment the results of which are here shown graphically. 



number of years with the so-called evening lunch method of 

 applying artificial illumination. The plan is to let the birds get up 

 in the morning at dawn and go to the perch at dusk, and then, 

 in order to shorten the long night period and to get them to eat 

 more food, the practice has been to turn the lights on at 8 o'clock in 

 the evening and leave them on for one hour, during which time 

 the birds are given a substantial grain feeding with plent}^ of fresh 

 water to drink. The birds did just as well under this method of 

 feeding as they did under morning lights. The results to date 

 point to the fact that this is going to be a very valuable solution of 

 the lighting problem. The following are some of the advantages of 

 the evening lunch briefly summarized: 



Let the birds get all the feed they require. 



