1880 12,443,120 to 50,155,783

1850 6,385,094 to 23,191,876

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Increase in 30 years 6,058,026 26,963,907

We did not quite double the number of cows, but considerably more than

doubled the population. The number of inhabitants was, in

Hints on Dairying · 第 28 / 204 题