266 RAYMOND PEARL 



In bringing this long piece of work to a close I desire to express 

 my deep obligation and gratitude to those who have aided in the 

 carrying out of the investigation. All of raw data (the trap-nest 

 records) were made by Mr. Frederick Walter Anderson, and 

 checked and copied by Mrs. Lottie McPheters Maxwell. Lack- 

 ing the stimulus of scientific interest in the outcome, these two 

 assistants have collected and handled these data with never- 

 failing fidelity to the highest ideals of scientific accuracy. Such 

 unswerving loyalty to the Station, the Biological Laboratory, and 

 the investigation itself as -they have shown is worthy of the 

 highest praise. 



Finally, my greatest debt is to my good friend Dr. Charles D. 

 Woods, the Director of this Station. Without his loyal support 

 in every possible way, his ever-ready encouragement, and his 

 far-sighted and broad-minded appreciation of the spirit and 

 meaning of scientific research, this investigation could not have 

 been carried out. He it was who laid the basic plans fourteen 

 years ago for the egg-production studies of which the present 

 investigation is the outcome. His was the faith which put at 

 the disposal of the work greatly increased financial and material 

 support at the very time when the outlook for any significant 

 practical success from the experiments seemed darkest. It would 

 indeed be a fortunate thing if such a broad and thoroughly and 

 purely scientific spirit was more generally to be found in executive 

 control of agricultural research in this country. 



LITERATURE CITED 



(1) Austin, E. H. 1908 Original laying capacity. Farm-poultry (Boston), vol. 



19, p. 347. 



(2) Batjr, E. 1911 Einfiihrungin dieexperimentelle Vererbungslehre. Berlin, 



pp. 1-293. 



(3) Bateson, W. 1909 Mendel's principles of heredity. Cambridge (Univ. 



Press), pp. xiv + 396. 



(4) Bateson, W. AND PuNNETT, R. C. 1911 The inheritance of the peculiar pig- 



mentation of the silky fowl. Journal of Genetics. Vol. 1, pp. 185-203. 



(5) Dackweiler, W. 1909 Die Eintausend-Eier-Henne. Deutsche landwirt. 



Gefliigel-Zeitung. 12 Jahrg. Nr. 31, pp. 534-535. 



(6) Davenport, C. B. 1909 Inheritance of characteristics in the domestic 



fowl. Carnegie Inst. Publ. 121, pp. 1-100. 



(7) 1910 The Imperfection of dominance and some of its consequences. 

 Amer. Nat., vol. 44, pp. 129-135. 



