Facts and Observations Relative to Sheep, Wool, Ploughs, and Oxen —— In Which the Importance of Improving the Short-Wooled Breeds by a Mixture of the Merino Blood Is Deduced From Actual Practice, Together With Some Remarks on the Advantages, Which Have Been Derived From the Use of Salt

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ISBN: 9781332126804 出版年：2016 页码：159 John Southey Somerville Forgotten Books

Our object has ever been to simplify and consequently to economise labour, in the firm belief that it is the straightest and safest road to plenty.