one for complete feathering on hack, Iwo for Vi to % 

 of feathers missing from back, three for M2 to % of 

 featliers missing, and four for a complete hare-backed bird. 



3. Feed consumption and feed conversion. 



4. Dailv mortality. 



In the second part of the experiment, two forms of feed ( mash and 

 pellets) and two floor space allotments lone square foot per bird and two- 

 thirds square foot per bird I were combined with both 15 and 120 foot- 

 candles of light. All groups received 12 hours of light daily. Thirty or 

 fortv-five day-old chicks of each sex were placed in each pen depending on 

 floor space allotment. All the chicks were randomized prior to pen dis- 

 tribution. The layout of each experiment again followed a randomized 

 block design. There were two replicates for each treatment combination. 

 A 2 x 3 factorial type analysis was used. 



The dates for the three Experiments in Part 2 were as follows: 

 Experiment IV — November 20, 1956, to January 29. 1957 

 Experiment V — February 15, 1957. to April 26. 1957 

 Experiment VI — November 18. 1957. to January 28. 1958 



Similar data as listed under Part I was obtained. 



Table 1. The Effect of Light Intensity and Daily Light Dosage L pon Weight 

 at 10 Weeks of Age. 



* Two experiments only 

 Light Dosage Average: 12 Hours 3.26; 24 Hours 3.26 

 Intensity Average: 15 foot candle? 3.30; 60 foot candles 3.25; 120 foot candles 3.24 



6 



