The Cordova daily times., 1919-05-22
WAR DEVICES T0BE SHOWN
 AT CAPITAL

in the war, and how American in
 genuity is turning some of them te
 peace-time uses will be a part of an
 educational exposition of the interior department that will be held in Wash
 ington for two weeks, beginning in
 the latter part of May. The exposi
 tion, however, will not be confined to
 these exhibits, but it is planned to in
 clude display of the departments t's
 ramifications into the life, safety and
 progress of the country resulting from
 the haphazard addition of bureaus from time to time. The various ex
 hibits will make the exposition of national scope.
 How a number of the bureaus of the non-military department did their
 bit in the war will be shown by the displays revealing the development of machine to detect the present of the enemy and spoil his plans, the recov- cry of hidden mineral treasures need ed to forge war engines, and the i'm provement of super-poisons. Along
 with these achievements, the exposi. tion will disclose inventions of private American citizens, some of which were regarded of such importance that the issuance of patents was with. held under the ban of secrecy until the signing of the armistice
 The patent office, bureau of the his. torical models of epoch-making Amer
 ican inventions, and from its cob webbed recesses as secret as the grave will resurrect certain foibles or fancies of famous men. Abraham Lincoln, for instance, designed con- trivance to facilitate the passage of vessels over shallow water, and his invention will be shown at the ex- position.
 ui i16 Ido Wdl, Iuc UuIcdu Ol mines, another wing of the depart ment devoted almost it's entire atten- tion to war problems. The Geophone listening device invented by the French to detect enemy tunneling and turned over to America for further development will be a part of the bureaus display. This device is to be used in locating entombed miners. and further development in the making is a proposed international code of rappings to enable entombed men to talk through solid earth. The gas masks, the making of sharpnel shells, and the methods of American oil drillers, which kept a continuous stream of liquid fuel flowing into the war zone, will be shown by working 
 The geological1 survey already is using the airplane in making topo- graphic maps, and this new method will be illustrated at the exposition. Models also will show undeveloped re- gions investigated by geologists. topo- graphers and engineers and the same regions after they have completed their work and shown the natural re- sources and the possible development of the territory.
 How America has shown its grati- tude to it's war heroes and their de- pendents will be demonstrated fin the pension bureau display. In line with Secretary Lanes farms-for-soldiers plan, the bureau will show that the country in the past has always advo- cated such rewards, this bureau hay ing adjudicated claims for lands and issued land warrants to soldiers forI more than 6S.oOO,oOO acres. Lincoln, Grant, Sherman, Sheridan and Farra- gut were granted land for service through the bureau, and the appli- cants signed by them will be on ex- hibition. Important historial papers signed by Washington, Jefferson, Han cock, Franklin and by Lafayette and will be on display.
 The general land office of the de- partment conducts the largest realty concern in the world, and its notable history, including the picturesque part Of opening townsites and Indian reser- vations, disposal of millions of acres of land and accounting of millions of dollars will be depicted. The nation's playgrounds of national parks. under the Jurisdiction of the department. Will not be overlooked. an exhibit being working model of . Yellow stone geyser in action, with another showing the rugged character Of the 1 proposed Roosevelt national park,
 The government railroad that ia being built in Alaska by model show something of the progress beinx made In the penetration of that pioneerI country by the Alaskan Nnrineering