with openings covered by top-hinged covers that form canopies for shade and protection from rain in the open position. all wall area is open for ventilation. When covers are open practically 60% of With the window opening covers all in the closed position the buildings will be tight enough to use for dry storage. No screens are contemmolated except for mess halls, hospitals and latrines, as it is believed that insects can be controlled easily by a proper program of pest control. Using available aluminum sheets of proven structural strength and corrosive resistance combines with aluminum connections, very minor maintenance would be required. The cost of such structures com»lete is approximately $7.50 per square foote It is proposed to use aluminum partitions in all buildings that require partitions although plywood is considered as an acceptable alternate for such interior walls. Plywood partitions have several good features, such as use as tack or bulletin boards, but their requirement of extra machinery and carpenters on the construction force and special non-corrosive connections causes their cost to be more than aluminum byfifty cents per square foot. The double roof with adequate space between sheets for free circulation of air will materially assist in maintaining a cooler building. During the roll-up period between experiments, aluminum buildings will not require maintenance for corrosion protection. Use of Aluminum Structures. With the great flexibility as to height and length, the ease of erection and resistance to deterioration, it is considered advisable to adopt this type of structure for all personnel housing, mess halls, administration building, communication building, infirmary, laundry, shops, cold storage, and power plant on Parry Island and as necessary on Eniwetok Island. The utilization of the existing structures on Eniwetok that are in useable Iv -15