HISTORICAL NOTES. IX 



TECHNICAL PUBLICATIONS. 



The bulletins of the Station contain the results of the work 

 ■of investigation. It frequently happens, however, that much 

 of the work of investigation is of so technical a nature as not 

 to warrant its distribution to the general mailing list of the 

 Experiment Station. The work of this kind is sometimes pub- 

 lished in the bulletins of the Station and sent out to a special 

 mailing list or sometimes published in technical journals or 

 other places. There is given below a complete list of the 

 biological and entomological publications for 1908. Some of 

 these have been printed in Station bulletins and others elsewhere 

 as indicated. 



A limited number of the complete sets of the biological publi- 

 cations and of the entomological publications for 1908 are avail- 

 able for exchange with laboratories and institutions working in 

 similar lines. Correspondence relative to the affecting of such 

 exchanges should be addressed to Director Charles D. Woods, 

 Maine Agricultural Experiment Station, Orono, Maine, U. S. A. 



Biology Publications 1908. 



1. Certain Points Concerning the Probable Error of the Stand- 



ard Deviation, by R. Pearl Biometrika, Vol. 6, pp. 112- 

 117, 1908. 



2. A Biometrical Study of Egg Production. Part I, Varia- 



tion in Annual Egg Production. By R. Pearl and F. M. 

 Surface. Bulletin no Bureau of Animal Industry, U. 

 S. Dept. Agr. (In press.) 



3. Fecundity of Swine, by F. M. Surface. Biometrika Vol. 



VI. 



4. The Frequency Constants of the Variable z=f (x 1 , x 2 ) by 



R. Pearl. Biometrika, Vol. VI. 

 v 5. Resection and End-to-End Anastomosis of the. Oviduct in 

 the Hen without Loss of Function, by R. Pearl and F. M. 

 Surface. American Journal of Physiology, Vol. 22, pp. 

 357-361. 1908. 

 6. Appliances and Methods for Pedigree Poultry Breeding, by 

 R. Pearl and F. M. Surface. Maine Agricultural Experi- 

 ment Station Bulletin No. 159, pp. 239-274. 1908. 



