The screen is of metal and rolls up on a roller like a window shade; it is of simple construction, durable and non-rusting. It is light and rolls with great despatch. Some of these shadelike frames can be raised and lowered at any point on the window frame; they are rigid, do not sag on the broadest of windows and are equipped with non-rusting metal, and are either of monel or bronze in fittings and framing. The track in which they slide is also non-rusting and holds the screen well in place. The screen cloth is of the best mesh and is tightly fastened at every point in the frame. The fact that these screens are inside the window leaves them free from the ravages of the elements, which is another point in their favor. Some of these screens are supplied with a cord like a shade that pulls up and down the same way. Some of these roller screens have employed zinc on all exposed parts, and this is a rust preventive. The same brand employs a waterproofed fabric less expensive than metal, also bronze, copper and monel metal. One especial type of rolling screen presents an advantage that is very desirable--it has a patent side grip for the edges of the monel screen cloth and a perfected runway in which travels a series of metal clips holding the cloth and so arranged as to roll up without difficulty. The screen roll is assembled in a zinc casing, made exactly to fit the window, which is easily attached to the “stops” at the top of the window frame and, when painted or stained to match the trim, looks like a part of it and is almost invisible. The two side “runways,” also of zinc, are screwed to the window “stops” like weather strips and are painted or stained in similar manner making them entirely inconspicuous. [Illustration: _Wire cloth rolls into this bar_ _Screen raised to any height for adjustment of windows_ _Courtesy of Rolup Screen Co._ THE SCREEN WHICH ROLLS UP IS A COMFORT AS WELL AS A SAFE AND SANE INSECT OSTRACIZER] The window shade is then replaced just below the screen casing and neither interferes with the other. The screen is so adjusted that it easily pulls down or pushes up at will, automatically locks itself on being brought down to the sill, and, after being released by a slight upward push remains in whatever position it is left. It covers the whole of every window and is so simple in construction and direct in action that, once installed, it should never get out of order. In case of damage it can easily be removed, new parts obtained and as easily be relocated. In new houses, under construction, provision can easily be made to “sink” the screen casing and side runways into the window frames so that they are almost invisible.