208 



Variations in Milk. 



[JULY, 



6 and 9 years. They were milked in the morning at 6.30, 

 and in the afternoon at 4 o'clock, the intervals between the 

 times of milking being thus 9J and 14A hours respectively. 



The milk of each cow was sampled at the morning and 

 evening milkings once a week, and on the same day the mixed 

 milk of the herd was also sampled. The yield of milk given 

 by each cow at every milking was also determined by weighing 

 with a spring balance in the usual way. After being weighed, 

 the milk was poured through a sieve, and then from one pail 

 to another several times, until it was thoroughly mixed. A 

 sample was immediately taken by dipping, and transferred 

 to a clean glass bottle. The bottles were despatched in 

 specially constructed boxes to Edinburgh immediately after 

 the evening milk was sampled. 



Of the 22 cows in the herd, 16 have been there for one year 

 or longer. In Table I these 16 cows are arranged in order 

 of yield, the average percentage of fat in the morning and 

 evening milk being also given. The yield is for the year 

 May, 1905 to May, 1906, and the number of weeks in this period 

 during which the cows gave milk is given in column 4. 



Table I. — Showing Cows arranged in the Order of their Yield 

 of Milk for the Year 1905-06. 



No. 

 of 

 Cow. 



Age 

 in 

 Years. 



Date of Calving. 



Weeks 



in 

 Milk. 



Yield of 

 Milk in 

 Gallons. 



Order. 



A vera 

 Cent. 



A.M. 



5e Per 

 of Fast. 



P. M. 



7 



9 



June 5, 1905 



47 



1,505 



1st 



2-84 



3 '40 



3 



9 



June 18, 1905 ... 



45 



1,207 



2nd 



2'34 



2 - 6l 



23 



7 



Oct. 15, 1905 ... 



49 



1,089 



3rd 



3*32 



4-31 



22 



7 



Feb. 7, 1906 



48 



991 



4th 



3'37 



4-52 



4 



7 



Oct. 17, 1905 ... 



40 



942 



5th 



3"33 



3'79 



19 





Oct. 10, 1905 ... 



49 



892 



6th 



3 '64 



4-41 



20 



"8 



Nov. 14, 1905 ... 



49 



861 



7th 



3"46 



4-24 



2 



7 ' 



Dec. 26, 1905 ... 



46 



841 



8th 



3-96 



4-07 



17 



6 



Jan. 3, 1906 



39 



801 



9th 



3 '43 



4* 16 



21 



\ 



Before May 1905 



52 



788 



loth 



4"02 



4-69 



5 





May 16, 1906 ... 



43 



772 



nth 



3 '43 



3*74 



8 



7 



March t8, 1906... 



37 



767 



1 2th 



3'33 



3-98 



24 



8 



May 2, 1906 



38 



743 



13th 



3-3i 



3'99 



14 



7 



May 23, 1905 ... 



40 



655 



14th 



3-58 



4'8i 



9 



9 



Aug. 25, 1^05 ... 



35 



638 



15th 



2-96 



3-5o 



11 



10 



Nov. 25, 1905 ... 



39 



478 



16th 



3-15 



3-60 



The average yield for the year of the 16 cows in the above 



