Seventy-two auxiliary cars were built to accompany the five: 14- inch naval batteries, all of special construction commensur ~ ate with re- quirements for heavy work under fire. How the framework for the roof of the ammunition car was constructed SBS os MARINE REVIEW Interior of ammunition car showirg projectile racks and space be- neath for storing pow- der. The 1400- found projectiles are conveyed to the gun car by means of a trolley hoist sup- ported by the longitudinal End and side views of am-~ munition car showing pow- der passing Pp latforms. The car is lined with 4- inch bullet- proof steel. Construction of the land batteries and the auxiliary cars in record time was one of the most important engi- neering achievements of the United States in the war. The factories, working under the navy department's ex- perts, are credited with doing remarkable work