=Cold-frames.=--In locations where tomatoes are much grown large areas are devoted to cold-frames covered either by sash or cloth curtains. Sash give much better protection from cold and on this account are more desirable, particularly where very early fruiting is wanted, but their first cost is much greater and the labor of attending to beds covered by them is much more than where cloth is used. Sash-covered beds should be of single width and run east and west, but if the beds are covered with cloth it is better that they be double width (12 feet) and run north and south. The front of the single and the sides of the double width beds should be 8 to 10 inches high, held firmly erect by stakes and perfectly parallel, both horizontally and vertically, with the back or with the central support. This should be 6 inches higher than the front. The cross strips, when sash are used, should be made of a 3-inch horizontal and a 1-1/2-inch vertical strip of 1-inch lumber nailed together very firmly in the form of an inverted T, the vertical pieces projecting 1 inch at each end and resting on the front and back of the bed and forming supports and guides for the sash. Some growers use vertical strips as heavy as 2x3 or 4 inches for stepping across the beds. When the plants are to be taken to the field, the sash and guides can be easily removed. (Fig. 15.) Ground to be covered with cold-frames should be made very friable and rich by repeated plowing and working in of a liberal dressing of well-rotted stable manure and wood ashes. In southwestern New Jersey, where immense areas of early tomatoes are grown, the soil of the beds for a depth of about 6 inches is removed and a layer 3 to 5 inches deep of well-rotted stable manure is placed in. That made of a mixture of manure from horses, cattle and hogs is preferred. It is important that the manure be so well rotted that it will not heat, and so dry that it will not become pasty when tramped into a firm, level layer. On this they place a layer of nearly 3 inches deep of rich, friable, moderately compact soil and prick out the plants into this. The roots soon bind the manure and soil together and by cutting through the manure so as to form blocks one can carry the plants to the fields with but very little disturbance of the root.