Sept. IS, 1919 



Variation in Milk of Ayrshire Cows 



291 



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

 cows of different ages — Continued 



Yield (in 

 gallons). 



8.S0. . 

 9SO. . 

 11.00. 

 11.50. 

 12.00. 

 12.50. 

 1300. 

 1350. 

 14.00. 

 14.50. 

 15.00. 

 15-50. 

 16.00. 

 16.50. 

 17.00. 

 17-50. 

 18.00. 

 18.50. 

 19.00. 

 19-50- 

 20.00. 

 ao.50. 

 21.00. 

 21.50. 

 22.00. 

 32.50. 

 23.00. 

 23-So. 

 34.00. 

 34-50- 

 35.00. 

 35-50. 

 36.00. 

 36.50. 

 37.00. 

 27.50. 

 28.50. 

 39.00. 



8-year-old cows. 



Total. 



1908. 



Fre- 



quen- 



cy- 



Per. 

 cent- 

 age. 



0.37 

 •74 



•37 

 •37 



4-45 

 i-8s 

 4-45 

 3-33 

 8- IS 

 5-56 

 8-52 

 4-81 

 8. IS 

 7.41 

 5- 19 

 8. IS 

 7-04 

 2- 22 

 2. 22 

 2. 22 

 2. 22 

 I. II 



•37 

 I. II 



Fre- 

 quen- 

 cy. 



367 



Per- 

 cent- 

 age. 



0. 27 

 •55 



2. 18 

 •27 

 •27 



1. 09 

 4-09 

 2- 73 

 3-82 

 6.81 

 4.90 

 5-45 

 7.90 

 7-63 

 6.81 

 7.08 

 5-45 

 4.09 

 4-63 

 5-99 

 4-63 

 2- 18 



1- 64 



2- 73 

 I. 64 



1-36 

 •27 



Combined 

 years. 



Fre- 

 quen- 

 cy 



637 



9-year-old cows. 



1908. 



Per- 

 cent- 

 age. 



0. 16 

 •31 

 • 16 



•47 



1. 41 

 •78 



I. 10 



1. 26 

 4- 24 

 2- 35 

 4-08 

 5-34 

 6.28 

 5-49 

 8. 16 

 6-44 

 7-38 

 7-22 

 5-34 

 5-81 

 5- 6s 

 4.40 

 3- 61 



2. 20 

 1.88 



2. 04 



I- 57 

 I- 57 



•63 

 I. 10 



. 16 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



0.47 

 •95 



•47 

 •47 

 1.89 

 2.83 

 2- 36 

 3-30 

 3- 30 

 4- 72 

 6.60 

 5-66 

 II. 79 

 5-66 

 7-55 

 6-60 

 2-83 

 6.13 

 6.60 

 3- 30 

 3-30 

 4-25 

 1.89 

 2-36 

 ■95 

 •47 

 •95 

 •47 

 •47 



•47 

 •47 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



o. 40 

 .40 



2.84 

 2.84 

 2-43 

 5-67 

 4-05 

 5-67 

 5- 26 

 9-31 

 6.48 

 6.48 

 6. 07 

 4.86 

 6.48 

 2.84 

 4-05 

 6-48 

 4-45 



2.84 



Combined 

 years. 



Fre- 

 quen- 

 cy. 



Per- 

 cent- 

 age. 



0-44 

 •6s 

 •44 

 •6s 

 •44 

 2. 40 

 2.83 

 2. 40 

 4- 5a 

 3- 70 

 5-23 

 5-88 

 7-63 

 8-93 

 6. 10 

 6. 75 

 5-66 

 4-79 

 4-36 

 5-33 

 S-oi 

 3-93 

 2. 61 

 1.96 

 2- 6t 

 1-74 

 •44 

 •6s 

 87 



• 33 



• 33 



