Abstract
V. Summary: For the purpose of describing the development of the Romney lambs’ coats it was found convenient to divide the skin into six areas, A, B, C, D, E and F, each being formed by the grouping of all regions that develop at the same time and rate.These areas are determined by the following methods:1. All regions whereXandYfollicles begin growth at the same time belong to the same area.2. All regions attaining the trio stage of development at the same time belong to the same area.

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