Studies in Milk Secretion 



111 



After the name of these leadirtg'bulls is placed the number 

 designating their place in table 4. The next column following 

 gives the gain or loss of the daughter's average milk produc- 

 tion as compared with the average milk production of their 

 dams. In the last column is given the probable significance of 

 the difference between the daughters' average milk yield and 

 their dams' average milk yield for any given sire. The signifi- 

 cance of these differences depend on the amount of the dif- 

 ference and on the number of offspring. The probable errors 

 on which the significance of the differences depend are given 

 in table 3. 



In the first group of leading Native Sires it is clear that 

 Hood Farm Torono leads in the increasing of milk production 

 of his progeny over that of the dams from which these progeny 

 sprang. 



The clear merit of this bull makes his pedigree of a good 

 deal of interest. 



Pedigree of Hood Farm Torono 60326. 





Sheet 

 No. 



-0 



IT3 O 







. - 







No. 20883 



Sophie's 



Tormentor 



0" 



No. 3533 

 Tormentor 



d 



No. P. S. 103 Khedive 



© 



cf 





No. P. S. 1607 



Angela ffi 



9 



3 



No. 17615 

 Baron's Sophie 



? 



No. P. S. 289 Baron 



0" 



s 



m 





 a 

 



H 



O 



b* 



a 



H 



CO o3 



CO " 



S H3 



. 







No. P. S. 434 Sophie 



9 







n 



No. 48723 9 

 Rhoda Hudson 



No. 3761 

 Oatono 



d" 



No. 



d 



•a 



Ah 



No. 7840 

 Ora 



9 



>- 



No. 5704 

 Rosabel Hudson 



? 



No. 918 

 Oneco 



d 



a 



03 



No. 2877 

 Arabel Hudson 



9 



CO 

 1 



O 

 CQ 



03 

 Hi 



O 



88 g 



sa 

 . 



No. 3533 

 Tormentor 



d 



No. P. S. 103 

 Khedive 



d 



No. 198 

 S. Leo 



0" 



CO 



No. 1442 



D. Coomassie 



9 



H 



No. F. S. 1607 

 Angela 



2 



No. 



d 



No. 



9 



<! 



CD 



No. 41428 

 Addie P. 



9 



No. 13658 



Ida's Stoke Pog 



d 

 is 



No. 4558 



Bachelor of St. Lambert 



d 



03 



No. 24990 



Ida of St. Lambert 



2 





No. 32915 

 Sigletta 



9 



No. 4027 

 Signalda 

 No. 19567 

 Kathletta 



d 

 2 



