Sept. 15, 1919 



Variation in Milk of Ayrshire Cows 



289 



TablB I. — Frequency distributions for variation in average weekly milk yield of Ayrshire 

 cows of different ages — Continued 



Yield (in 

 gallons). 



S-oo. . 



SSo- • 



6.00. . 



7.00. . 



7-SO- • 



8.00. . 



8.S0. . 



9.00. . 



9SO- 



10.00. 



10.50. 



11.00. 



11.50. 



12.00. 



12.50- 



1300. 



13.50. 



14.00 . 



14-50. 



15-00. 



IS-SO. 



16.00. 



16.50. 



17.00. 



17-50- 



18.00. 



18.50. 



19.00. 



19. so. 



20.00. 



20.50. 



21.00. 



21.50. 



22.00. 



22.50. 



23.00. 



23 SO. 



24.00. 



2450. 



25.00. 



25-50. 



37.00. 



39.00. 



Total. 



4-year-old cows. 



1908. 



Fre- 

 quen- 

 cy. 



526 



Per- 

 cent- 

 age. 



•38 

 .76 

 •38 

 1. 14 

 I. 14 

 1. 90 



3-04 

 s- 70 



4-37 

 5- 13 

 4-75 

 5-51 

 7.04 

 7.80 

 8-75 

 5- 70 

 5-9° 

 6-60 

 4- 18 

 5-71 

 3- 80 

 2.28 

 2.47 

 1-33 

 • 19 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



■17 

 • 17 



5- 40 



7. 60 



8. II 



9. 12 

 6- 59 

 7-43 

 S-07 

 7.09 

 5-4° 

 3-38 

 2.87 

 2-53 

 2-03 

 I. 18 

 2-53 



•51 

 1-52 



Combined 



years. 



Fre- 

 quen- 

 cy. 



1,118 



Per- 

 cent- 

 age. 



• 27 

 •71 

 •45 



3- 76 



4- 74 

 5-28 

 6.26 

 6.89 

 8. 14 

 7. 16 

 8-05 

 5-37 

 6-53 

 5-99 

 3-76 



5-year-old cows. 



1908. 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



I- 19 



•71 

 1. 90 

 2. 14 

 4.04 

 4.28 

 5-23 

 7-36 

 7-84 

 8.79 

 8-08 

 8.31 

 4.51 

 3- 80 

 7- 13 

 5-46 

 3-80 

 4.28 

 2.38 

 1.42 

 I- 19 

 I- 19 

 •47 

 • 71 

 •47 

 •47 

 •47 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



.41 

 . 20 

 •41 

 1-85 

 1.44 

 2.0s 

 2. 67 

 3-(>9 

 3-48 

 5-94 

 9-63 

 5-94 

 8.20 

 9. 02 

 6-35 

 7.17 

 6.15 

 4-30 

 4.92 

 2. 46 

 3- 69 



2- 46 

 2. 26 

 1. 64 

 •41 

 .62 

 .82 

 ■41 



Combined 

 years. 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



•33 



•33 



•44 



1-54 



I. 10 



1.98 



2.43 



3^8s 



3^85 



5-61 



8.59 



6.83 



8.44 



8.59 



7.27 



$•94 



5- 06 



561 



517 



3- 08 



3- 96 



2.43 



1.87 



1-43 



•77 



■SS 



•77 



•44 



■33 



.44 



