APPENDIX. 



RECORDS OF THE EXPERIMENTAL COWS. 



The following tables show the records of the experimental cows for 

 the whole test by 10-day periods. Table I gives the results by groups, 

 and Table II the individual records of each of the cows. Originally 

 there were 20 cows in the experiment, 10 in each group, but, as before 

 stated, an injury to one of the tick-free cow t s necessitated her removal 

 from the test. Therefore, in Table I the tick-free group consists of 

 9 cows, and in Table II no data are given for cow 4, the cow in 

 question. 



Table I. — Group records of experimental cows by 10-day periods. 

 TICK-FREE COWS. 









Amount of 









Amount of 





Milk production. 





feed con- 

 s u m e d 

 per cow. 



Ten-day 



Milk production. 





feed con- 

 s u med 

 per cow. 



Ten-day 



■u 



+^ 



-H 







+S 



+j 



=« 







period 



§ 



9, 



O 









period 



P 



9_ 



o 









ended— 



O 



IS 



aS 









ended — 



u 





&2 



A. 



SB 



"<3 









MO 

 03 <« 



53° 



5? a 



as 

 82 





tA 



a 





03 *-, 



s?a 



Jo 



11 



d 



sA 



a 





!> 



> 





o 









> 



> " 













< 



<\ 



PM 



m 



W 



o 





< 



< 



Ph 



ffl 



W 



o 



1913. 



Lbs. 



Lbs. 



P.rt. 



Lbs. 



Lbs. 



Lbs. 



L913. 



Lbs. 



Lbs. 



P.ct. 



Lbs. 



Lbs. 



Lbs. 



May 30 



176.2 



6.58 



3. 73 



719.2 



168.9 



48.8 



Aug. 28 



125.5 



.5. 37 



4.28 



727.6 



185.3 



45.6 



June 9 



157. 3 



5.87 



3.73 



724. 4 



173.9 



44.0 



Sept. 7 



120.6 



5. 00 



4.13 



738.9 



179.4 



45.6 



June 19 



154.4 



5. 62 



3.64 



723. 4 



172.7 



46.7 



Sept, 17 



122.9 



5. 24 



4.26 



748.6 



172.7 



44.5 



June 29 



155.2 



5.84 



3.76 



694.7 



172. 3 



45.6 



Sept. 27 



104.2 



4.64 



4.45 



756.8 



169.9 



44.5 



July 9 



164.0 



6.04 



3.69 



703. 1 



189.2 



45.6 



Oct. 17 



92.1 



4.42 



4.79 



763. 4 



170.8 



44.5 



July 19 

 July 29 



161.7 

 150.3 



5.96 

 5.98 



3.69 

 3.97 



703.1 

 706.9 



190.3 

 196.1 



45.6 

 45.6 

















Total per 















Aug. 8 



122.3 



4,56 



3 T> 



789. 3 



182.1 



45.6 



cow .... 



1,932.4 



76 30 







2,500.4 



637. 8 



Aug. IS 



125.7 



5.18 



4.12 



718.0 



176.8 



45.6 

















TICK-INFESTED COWS. 



May 30. 

 Juiie 9 . . 

 June 19. 

 June 29. 

 July 9 . . 

 July 19. 

 July 29. 

 Aug. 8. . 

 Aug. 18. 



18 



177. 9 



6.38 



3. 58 



707.2 



163.9 



47.7 



171.6 



5. 85 



3.41 



712.8 



169.7 



44.3 



168.7 



5.93 



3.51 



726.7 



174.8 



50.1 



161.1 



5.61 



::. 48 



691.6 



174. 2 



47.0 



165.9 



5.86 



3.54 



705.6 



193.8 



47.0 



158.1 



5. 55 



3.51 



702.7 



191.1 



47.0 



143.6 



5.12 



3. 56 



706.1 



190.5 



47.7 



107.6 



3.73 



3.46 



782. 3 



176.7 



47.0 



110.5 



4.20 



3. 80 



728. 



180.7 



47.0 



Aug. 28 



Sept. 7 



Sept. 17 



Sept. 27 



Oct. 7 



Total per 

 cow. . .. 



104.5 

 97.8 

 86.9 

 72.5 

 60.6 



3.87 

 3.73 

 4.23 

 4.72 

 4.71 



715. 6 

 707.7 

 717.0 

 721.2 

 732.9 



184.5 

 170.6 

 159. 3 

 161.6 

 145. 4 



2, 436. 8 



47.0 

 47.0 

 45.0 

 49.5 

 44.6 



1 



