In the above cases the State prohibition overturned was directed specifically to shipments beyond the State. In two other cases the State enactments involved reached all commerce, both domestic and interstate without discrimination. In the first of these, Sligh _v._ Kirkwood,[962] the Court upheld the application to oranges which were intended for the interstate market of a Florida statute prohibiting the sale, shipment, or delivery for shipment of any citrus fruits which were immature or otherwise unfit for consumption. The burden thus imposed upon interstate commerce was held by the Court to be incidental merely to the effective enforcement of a measure intended to safeguard the health of the people of Florida. Moreover, said the Court, "we may take judicial notice of the fact that the raising of citrus fruits is one of the great industries of the State of Florida. It was competent for the legislature to find that it was essential for the success of that industry that its reputation be preserved in other States wherein such fruits find their most extensive market."[963] In Lemke _v._ Farmers Grain Co.,[964] on the other hand, a North Dakota statute which confined the purchase of grain within that State to those holding licenses from the State and which regulated prices, was pronounced void under the commerce clause. To the argument that such legislation was "in the interest of the grain growers and essential to protect them from fraudulent purchases, and to secure payment to them of fair prices for the grain actually sold," the Court answered that, "Congress is amply authorized to pass measures to protect interstate commerce if legislation of that character is needed." The differentiation of the above two cases is twofold. The statute under review in the earlier one was of the ordinary type of inspection law and was applied without discrimination to fruits designed for the home and the interstate market. The North Dakota act was far more drastic, approximating an attempt on the part of the State to license interstate commerce. What is even more important, however, the later case represents a new rule of law, and one which at the time the Florida act was before the Court had not yet been heard of. This is embodied in the head note of the case in the following words: "The business of buying grain in North Dakota, practically all of which is intended for shipment to, and sale at, terminal markets in other States, conformably to the usual and general course of business in the grain trade, is interstate commerce."[965] The application of this rule in the field of state taxation was mentioned on a previous page.[966] STATE CONSERVATION AND EMBARGO MEASURES: THE MILK CASES