BULLETIN 243. 



FURTHER DATA OX THE MEASUREMENT OF 

 INBREEDING/ 



By Raymond Pearl. 



. The purpose of the present bulletin is to continue the discus- 

 sion of the measurement of inbreeding- beyond the point where 

 it was left in Bulletin 215 of this Station.' In that bulletin, 



^This bulletin is based on certain technical studies on the theory of 

 inbreeding which have appeared since the publication of Bulletin 215 

 of this Station. These technical papers have appeared under the general 

 title "Studies on Inbreeding."' The following list gives the bibliographi- 

 cal data regarding this series. 



Studies on Inbreeding, i. A Contribution towards an Analysis of 

 the Problem of Inbreeding. By R. Pearl, Amer. Nat. Vol. XLVII, pp. 

 577-615, 1913. 



II. Tables for Calculating Coefficients of Inbreeding. By R. Pearl 

 and John Rice Miner, Ann. Rept. Me. Agr. Expt. Stat, for 1913, pp. 

 101-202, (Bulletin 218). 1913. 



III. On the Results of Inbreeding a Mendelian Population : A 

 Correction and Extension of Previous Conclusions. By R. Pearl, 

 Amer. Nat. Vol. XLVIII, pp. 57-62, 1914. 



IV. On a General Formula for the Constitution of the nth Generation 

 of a Mendelian Population in which all Matings are of Brother and 

 Sister. By R. Pearl. Ibid. Vol. XLVIII, pp. 490-494, 1914. 



V. Inbreeding and Relationship Coefficients. By R. Pearl. Ibid. 

 Vol. XLVIII, pp. 51.3-523. 1914- 



VI. Some Further Considerations regarding Cousin and Related 

 Kinds of Mating. By R. Pearl. Ibid. Vol. XLIX, pp. 570-575, 1915. 



It should be said that the above papers (with the exception of II) 

 are not available for distribution by the Maine Agricultural Experiment 

 Station. It is, however, the aim of the present bulletin, in conjunction 

 with Bulletin 215 of this Station, to present the essential features of 

 this series of studies likely to be of interest to the practical stock breeder 

 in condensed form. A general review of the whole subject in detail 

 will be found in the present writer's book entitled "Modes of Research 

 in Genetics," New York (The Macmillan Co.) 1915. 



^Pearl, R. The Measurement of the Intensity of Inbreeding. Ma 

 Agr. Expt. Stat. Bulletin 215, pp. 123-138. 1913. 



