EFFECTS OF INBREEDING AND CROSSBREEDING, 



63 



iBLE 14. — The average gain between birth and 33 days, in the different inbred families. 

 [The average in litters of each size and the index (see Table 9), 1906 to 1910 and 1911 to 1915.] 



am- 



Size of Utter, 1906-1910. 



Grams. 

 207.2 

 158.8 

 208.3 

 181.0 

 229.6 

 205.0 

 212.3 

 217.3 

 225.0 

 163.3 

 187.5 

 212.0 

 182.6 

 217.3 

 215.0 

 172.3 

 201.2 

 180.3 

 165.0 

 184.4 

 192.1 

 200.4 

 185.0 



Orams. 

 158.1 

 162.6 

 187.7 

 179.0 

 189.7 

 191.7 

 206 

 178.2 

 165.3 

 158.8 

 177.5 

 154.3 

 167.7 

 192.7 

 185.4 

 169.1 

 167.9 

 168.2 

 169.0 

 164.9 

 165.5 

 175.4 

 184.3 



Grams, 

 144.4 

 144.8 

 161.5 

 150.7 

 179.3 

 154.3 

 169.6 

 167.0 

 147.3 

 159.6 

 161.2 

 157.6 

 158.3 

 166.8 

 165.0 

 163.5 

 156.6 

 149.3 

 172.6 

 151.4 

 163.1 

 178.3 

 150.5 



Grams. 

 152.2 

 142.4 

 138.8 

 145.1 

 153.8 

 159.5 

 161.2 

 136.7 

 125.9 

 124.3 

 153.5 

 131.4 

 147.7 

 153.5 

 132.1 

 135.8 

 135.8 

 137.0 

 180.7 

 138.9 

 140.9 

 168.8 

 152.5 



Grams. 

 173.0 

 95.0 

 130.5 

 140.0 

 1.58. 2 

 125.0 

 138.6 

 139.7 



120.3 

 140.0 

 121.3 

 114.4 

 151.7 

 137.3 

 135.6 

 139.6 

 128.0 

 147.5 

 147.6 

 136.5 

 127.3 



Grams. 



101.3 

 138.0 

 116.2 

 127.8 

 119.6 

 127.2 

 170.0 



114.0 

 123.1 



131.0 



123.6 

 111.4 

 131.7 

 132.5 



Index 



141.7 

 143.1 

 125.0 



156.4 

 151.1 

 169.5 

 161.1 

 182.4 

 171.6 

 183.4 

 169.3 

 156.2 

 152.7 

 167.1 

 156.8 

 161.4 

 177.0 

 169.5 

 156.5 

 160.3 

 155.6 

 172.4 

 156.2 

 162.3 

 177.7 

 164.1 



Size of litter, 1911-1915. 



Grms. 

 162.5 

 134.1 

 189.0 

 160.9 

 215.6 

 201.4 

 207.0 

 192.0 



175.3 

 169.3 

 153.0 

 169.7 

 190.0 

 176.8 

 171.1 

 171.0 

 165.8 

 116.5 

 162.5 

 188.6 

 223.9 

 181.0 



Grms. 

 157.9 

 137.5 

 173.2 

 161.5 

 186 

 194.3 

 178.7 

 164.0 

 115.0 

 155.4 

 151.7 

 160.9 

 155.8 

 161.6 

 155.8 

 153.5 

 162.7 

 159.7 

 139.2 

 161.9 

 1.59. 5 

 170, 

 160.3 



Grms. 

 102.9 

 118.1 

 156.5 

 148.0 

 148.0 

 157.1 

 1.50. 9 

 140.7 

 165.0 

 131.8 

 139.8 

 127.5 

 129.1 

 137.2 

 124.3 

 146.4 

 145.8 

 131.1 

 133.8 

 143.8 

 141.9 

 152.1 

 144.3 



Grms. 



101.6 

 154.0 

 121.6 

 134.5 

 139.0 

 133.3 

 121.7 



118.8 

 127.5 

 122.1 

 100.9 

 123.4 

 102.8 

 131.3 

 118.5 

 129.4 

 137.9 

 129.9 

 132.2 

 131.2 

 112.3 



Grms. 



112.4 

 155.0 

 129.7 

 140.6 

 132.8 

 129.9 



121.7 

 167.7 

 101.9 



98.0 

 145.0 

 125.0 



72.1 

 117.5 

 139.0 

 100.0 

 131.6 

 146.2 

 123.0 

 117.3 



Index 



Grms. 



142.8 

 130.0 

 158.4 

 93.0 



115.0 



93.3 



129.0 

 76.1 

 95.0 



126.2 

 122.2 

 164.2 

 148.0 

 163.7 

 169.1 

 161.4 

 149.0 



140.7 

 143.9 

 139.0 

 135.6 

 147.0 

 134.7 

 148.0 

 147.9 

 142.9 

 134.5 

 148.3 

 149.9 

 160.5 

 146.4 



Table 15. — The average weight at 33 days in the different inbred families. 

 [The average in litters of each size and the index (see Table 9), 1906 to 1910 and 1911 to 1915.] 







Size of Utter, 1906-1910. 







Size of Utter, 1911-1915. 





'am- 



iiy. 















Index 





Index 



























1 



2 



3 



4 



5 



6 





1 



2 



3 



4 



5 



6 







Gram^. 



Gravis. 



Grams. 



Grams 



Grams. 



Grams. 





Grms. 



GrmF. 



Grms. 



Grms. 



Grms. 



Grms. 





!.!!!! 



311.7 

 269.5 



247.0 

 255.8 



219.2 

 226.0 



218.1 

 216.3 



245.5 

 159.8 



"iei'o 



236.6 

 237.4 



274.5 

 236.2 



253.0 

 220.9 



112. i 

 188.4 









207.3 



162.7 



176.9 





197.8 



i 



329.5 



285.1 



243.9 



210.9 



202.2 



199.5 



• 258. 2 



303.5 



270.0 



234. 4 



229.5 



229.5 





251.0 



!..... 



287.5 



274.5 



232.0 



216.2 



208.8 



179.5 



247.1 



270.1 



254.3 



239.8 



193.5 



194.5 



200.6 



233.9 



) 



340.5 



291.3 



265.2 



232.7 



225.1 



200.9 



274.1 



335.7 



284.9 



231.8 



211.3 



208.4 



192. C 



254.0 



[ 



319.5 



287.3 



237.3 



237.3 



192.9 



183.3 



260.5 



318.6 



293.6 



243.9 



213.3 



205.2 



216.2 



260.2 



i 



331.3 



312.2 



255.9 



239.1 



212.1 



191.7 



277.0 



326.2 



280.7 



236.6 



207.0 



201.8 



156.2 



252.9 



1 



329.5 

 349.5 

 270.4 



268.2 

 256.0 

 246.1 



250.7 

 233.0 

 235.9 



209.5 

 194.9 

 194.2 



210.7 



249.5 



255.6 

 243.9 

 234.1 



297.5 

 "278." 9 



260.1 

 229.5 

 245.0 



220.4 

 249.5 

 206.1 



196.2 







236.2 











I 



185.0 



179.5 



184.7 



189.5 



176.2 



220.8 



■! 



299.5 



275.2 



248.3 



227.5 



212.8 



180.9 



257.3 



281.9 



248.8 



226.4 



201.5 



246.6 





233.7 



J 



325.5 



246.8 



241. C 



207.1 



192. C 





244.4 



273.5 



260.1 



211.1 



196.8 



183.3 



169.5 



229.2 



) 



293.3 



257.1 



241.4 



226.4 



177.7 



195.5 



248.3 



275.2 



249.7 



208.7 



170.7 



163.6 





220.1 



I 



336.2 



290. C 



250. S 



231. C 



219.5 





267.2 



288.3 



249.7 



213.0 



189.5 



189.6 





226.8 



i 



327.0 



282.0 



251.3 



206. S 



207.2 



192.4 



259.2 



286.1 



249.8 



204.3 



168. 5 



188.5 





219.0 



4 



277.7 



260.6 



232.8 



206.5 



201.4 



172.2 



240.4 



271.8 



236.8 



221.9 



197.5 



129.5 





226.5 



1 



314.5 



264.4 



240.8 



206. £ 



205. £ 



196.2 



248.5 



281.5 



258.0 



224.5 



187.4 



178.8 



201.3 



232.8 



2 



288.0 



261.2 



227.6 



207.3 



187.5 



186.2 



239.7 



272.5 



248.2 



208.1 



196.5 



199.5 





224.3 



i 



249.5 



264.7 



261.7 



263.8 



217.8 





261.8 



218.7 



233. S 



218.7 



212.7 



159.5 





222.1 



3 



292.2 



254.8 



230.1 



212.2 



209.5 



200.2 



240.1 



269.5 



258. S 



225.9 



202.1 



197.4 



190.8 



235.4 



1 



299.5 



257.2 



245.4 



213.2 



201.8 



203.2 



247.9 



297.3 



252.1 



217.9 



199.1 



209.6 



142.8 



232.3 



8 



308. C 



268.8 



260.7 



244.9 



203.4 



186.2 



264.7 



348.4 



269.8 



236.0 



206.5 



197.5 



159.5 



251.5 



9. .. 



282.8 



272.6 



226.2 



224.5 







245.4 



277.7 



246.0 



221.2 



178.6 



174.0 





225.8 











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