Studies in Milk Secretion 



115 



nifies each quartile contains one-fourth the total number of 

 individuals in the whole population. The letter consequently 

 gives the place for their respective populations in which the 

 dam's or daughter's butter-fat percentage falls. The letters 

 together give the relation of the dam's position to that of the 

 daughters. Thus AC tell us (the dam's letter is always placed 

 first) that the dam's butter-fat percentage was in the highest 

 group or above 5.995 per cent and the daughter's butter-fat 

 percentage is the third group or between 5.174 and 5.559 per 

 cent. 



The coefficients in front of the letters signify the percent- 

 age that a given kind of daughter-dam pair was of the total 

 number of pairs into which the bull entered. This coefficient 

 is multiplied by 100 to have the coefficient in whole numbers. 

 With this arrangement it is possible to tell to what kind of 

 dams a bull was mated and what his daughters from these 

 matings did. 



TABLE 5. 



Bulls in Order of Net Change in Butter-Fat Percentage of 



Daughters. 







&^ 



t~t 







No. 



Name of Bull 





a .g 



a 



s.3 



Quartile Changes 







Hof^ 



^0^ 





1 



Clear Brook Chief 



74685 



2 



+1.338 



100DA 



2 



Violet's Oakland Count 



80974 



2 



+1.100 



50CA+50DB 



3 Great Edison 



77564 



2 



+1.022 



50CA+50DC 



4 Nora Boy of Turner 



72135 



2 



+ 0.893 



50DA+50DB 



5 Viola's Golden Jolly 



79314 



3 



+ 0.888 



33AA+33CA+33DB 



6 Atwell Farm Melia Ann's 



97392 



2 



+0.757 



50CB+50DC 



King 











7 Noble's Jolly Golden Lad 



104562 



2 



+0.682 



50DB+50DD 



8 Irene's King Pogis 



73182 



17 



+ 0.650 



18AA+12BA+6BB+6BC+18CA 













+12CB+6CC-1-18DA+6DB 



9 



Hector Marigold 



59121 



3 



+0.617 



33AB+33DA+33DB 



10 



Merry Maiden's Grandson 



71003 



6 



+ 0.560 



33BA+17BB+33CA+17DC 



11 



King's Rioter Lawrence 



65453 



2 



+ 0.540 



50DB+50DC 



12 



Glory's Pedro 



95123 



2 



+0.549 



50BA+50CB 



13 



Pogis 75th of Hood Farm 



94501 



7 



+0.518 



14BC+43CA+14CB+14DC+ 

 14DD 



14 



Jacoba's Emanon 



84177 



9 



+0.512 



22AA+33BA+33BB+11CA 



15 



Marigold's Exile King 



53232 



8 



+0.500 



13AA+13BA+25CA+13CB+ 

 25CC+13DC 



16 



Romeo of Sheomet 



62715 



4 



+ 0.497 



25CA+25CB+25DB+25DC 



17 



Golden Fern's Son 



78687 



10 



+0.458 



10AA+20BA+10BC+10CA+ 

 20CB+10CC+10DA+10DB 



18 



Girldine's Champion Pogis 



94004 



3 



+0.453 



33CA+33CC+33DB 



19 



Golden Glow's Chief 



61460 



4 



+0.453 



25BA+75DC 



20 



Loretta D's Champion's 



77002 



7 



+0.441 



14DB+43DC+43DD 



21 Nebraska Lad 



71828 



2 



+0.439 



50BA+50DD 



