Cow Motif   A full udder thwacking (when the cow runs for real) up against each cowside in turn, loud as a beaten carpet. Around a field gate, sometimes deep semi­- circular ripples, stormforce dried mud waves: a minor mystery to set   beside corn circles. The motif recurs in the frown ripples sculpted— between and above cows’ wide-spaced eyes— placid on the forehead. When not, but coming at you, cows can be stopped dead it’s claimed with a hard application by   thumb and forefinger pinchlocking the nostrils, not easy mid-charge (though something matadors might try under the cover…