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Hay crop silages generally are more difficult to ferment and may respond to many silage additives , but animal response when fed treated silages is usually not different from animals fed untreated silage . A man may go south , and , stumbling over a bone , may meditate upon it till he has found a new starting-point for anatomy ; or eastward , and discover a new key to language telling a new story of races ; or he may head an expedition that opens new continental pathways , get himself mained in body , and go through a whole heroic poem of resolve and endurance ; and at the end of a few months he may come back to find his neighbors grumbling at the same parish grievance as before , or to see the same elderly gentleman treading the pavement in discourse with himself , shaking his head after the same percussive butcher 's boy , and pausing at the same shop-window to look at the same prints .