A REVOLUTION IN EGG PRODUCTION 107 



J\Iichigan. He had been skeptical right along about the effi- 

 ciency of light — attributing the author's good egg yield to 

 other causes. His egg yield in November, 1914, however, 

 had dwindled to twenty-two eggs in twenty-one days, and on 

 November 26th the author took him an Air-O-Lantern, which 

 was installed in the poultry house. The following extract 

 from the letter of November 21st from Maurice L. Newell, 

 will give some idea of the condition of the flock: 



"Some of those early moulters, you know they started to 

 moult in July, well they came just up to the laying point — 

 red large combs, etc., and in good flesh — one or two started 

 to lay, then they quit and are now in their second moult 

 around neck and losing tail feathers. Also some of the year- 

 ling hens have done the same, and while the pullets are look- 

 ing well, and some have large lay-over combs, have so far 

 not received an egg from them." 



A few days later the author got word from his brother, 

 that he was shipping eggs to Chicago in case lots. 



Mr. William Trefzger next installed electric lights in his 

 poultry house. On February 1st the author wrote him as 

 follows : 



"Congress Park, III., February 1st, 1915. 

 Mr. Wm. Trefzger, 8S41 South Sangamon Street, Chicago. 



Dear Sir: Knowing that you have kept poultry for a number of 

 years, and that you have recently installed electric lights in your 

 poultry house, I shall appreciate the favor if you will write, giving me 

 the results obtained from your experiment. 



I am enclosing a stamped and addressed envelope for your reply, 

 which will greatly oblige, 



Yours very truly, 



GEO. G. NEWELL. 



And received the following reply: 



8541 South Sangamon Street, Chicago, 111., February 3rd, 1915. 

 Mr. Geo. G. Newell, Congress Park, 111. 



Dear Sir: I have received your letter dated February 1st, 1915. 

 You will remember my conversation with you about the middle of 

 last December, in which I asked you what caused my pullets to 

 suddenly stop laying, and your reply that it was due to the short days. 



At that time I could not see it your way. Within a few days 

 I spoke to you twice again on the same subject. On the latter occa- 

 sion you volunteered the theory: 



