Show abortion control abortion takes a large toll of the dairy industry and it la Is regrettable that we know so ao little about control measures vaccines or of one kind and another have been sold and some of them efem eem to be fairly effective in bomel some herds and of little effect in inath ath era em one or two facts we are sure of tnt that the spread of the disease Is largely through germs expelled in the droppings and carried to the wl jed irav en to td healthy cows or delfem probably the cont aeton ts is carried to the feed anthe on the feet of the herdsman |