. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. 36 SCIENTIFIC AGRICULTURE. Jaiiuarv, 1921. yet completely built \\p the following graph fairly accurately repi'esents what has actually occurred. GRAPH III. DwaJt-vad. 'im^-x>iiay\j ^ojl-JaMd. '^oA-QtXyr^ f/gjJL $UAa Ica^n ^ £i('KUln '&\eedt>. It is probably upon the more or less mixed breeds of sheep thus produced that all modern breeds of sheep are based. The Old Testament record of Jacob's method of breeding is suggestive of "how the sheep got its white coat," while Arab and Mo
. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. 36 SCIENTIFIC AGRICULTURE. Jaiiuarv, 1921. yet completely built \\p the following graph fairly accurately repi'esents what has actually occurred. GRAPH III. DwaJt-vad. 'im^-x>iiay\j ^ojl-JaMd. '^oA-QtXyr^ f/gjJL $UAa Ica^n ^ £i('KUln '&\eedt>. It is probably upon the more or less mixed breeds of sheep thus produced that all modern breeds of sheep are based. The Old Testament record of Jacob's method of breeding is suggestive of "how the sheep got its white coat," while Arab and Moor- ish traditions point to the probable evolution of the Merino breed along the shores of the Mediterranean. Broadly, the evolution of the really modem breeds of sheep ihas been based upon.— (a) Racial tendency to variation. (6) The direct and indirect action of the varied environment tending to produce variation. Natural and artificial selection working upon these variations jiiave resulted in the evolution of the typi- cal breeds of sheep probably on the lines indicated in the following graph. GRAPH Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa [etc. ]
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