An experienced director of exhibit trains writes: “An especially built and designed car for the purpose is well worth its additional cost. Such cars as I have seen provided by the railroads for temporary service in exhibit lines have all been old, small, and often broken-down baggage or passenger cars, in every way unsuitable for a purpose where the most extreme dimensions available still leave the exhibit and circulation space contracted. Cars should be built on the largest frames and the most extreme dimensions that the railroads, as governed by their tracks, bridges, and tunnels can handle. Windows should be set high in the car walls, giving a high source of light and maximum wall space for exhibits, and should be larger than those in the ordinary coach to secure better ventilation. The doors should be built wider than the usual car door.” The plan calls for small and compact living and office quarters at one end. The director also adds that the installation of an engine to furnish lights and power for working models is an important item of equipment. One engine is sufficient to run lights, fans, and models for several cars. In these days of portable electrical outfits, this item is practicable and fairly inexpensive. TRAVELING ACCOMMODATIONS FOR STAFF MEMBERS The kind of living arrangements provided for the lecturers and assistants will depend, to some extent, upon the frequency of the stops and the number of persons traveling with the train. Several of the more elaborately equipped trains have carried a Pullman sleeping coach and a diner for the staff members. If there are frequent stops, it would seem that at least sleeping quarters on the train are necessary. Meals are sometimes arranged for at stopping places, and in this case the advance agent is responsible for seeing that good meals are assured. When stops of a full day or more are made, the staff members sometimes find rooms and meals in hotels en route. Whatever the arrangements, as is stated elsewhere, they should insure the greatest possible degree of comfort to the staff, in order to offset the severe strain that this kind of campaigning inevitably involves. TREATMENT OF CAR INTERIORS The two chief difficulties with exhibits on trains are keeping them clean and so securing them in place as to withstand the jarring motion. Washable surfaces on floors, shelves, and walls are essential. Exhibits should be either of the kind that are easily kept clean or else placed under cover or frequently replaced. No decorations such as draped bunting, which collects and holds dust, should be used. Clusters of small flags hung straight from chandeliers are attractive and non-dust collecting decorations. Small objects should be either securely fastened to shelves or packed away while the train is in motion. [Illustration: FLAT CARS USED FOR DISPLAYING CAPTURED GERMAN TROPHIES