90 



Bulletin 222. 



had been in milk for about six weeks. (Figs. 3, 4, 5, p. 22, 23.) Her 

 lactation periods were as follows: 



1900 



1901 Dropped calf 



1902 Dropped calf 



1903 Dropped calf 



April 4 to Dec. 20 38 weeks 



March 15, dry Jan. 15, 1902 44 weeks 



April 21, dry April 7, 1903 50 weeks 



June 18 to close of expt. Feb. 23, 1904 35 weeks 



6. Polly. 



This cow was very evidently a grade Jersey. She was of fair size 

 and good form, but very nervous and easily excited. She gave the 

 richest milk of any in the lot, and, like Patty, was one of the best 

 producers, although she had lost one teat through accident. 



She entered the experiment the third week and was then fresh in 

 milk. Her lactation periods were as follows: 



1900 from April 11 to Dec. 20. 37 weeks 



1901 Dropped calf March 23, dry Feb. 15, 1902 46 weeks 



1902 Dropped calf June 19, dry July 16, 1903 56 weeks 



1903 Dropped calf Sept. 22 to end of expt. Feb. 23, 1904 20 weeks 



Like Dena, this cow ran farrow in 1902 and her records for the 

 third and fourth periods have been divided in the same way. That 

 is, the third period extends from June 19, 1902, to February 23, 1903, 

 or 36 weeks, and the fourth period from February 23, 1903, to Feb- 

 ruary 23, 1904, or excluding the time she was dry 40 weeks in all. 



