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i-----1 FEATURES j News of Churches l m j Books—Art—Music j ' WASHINGTON, J). C„ SATURDAY, JUNE 27, 1936> _PAGE B—1 SCHOOL DENTAL CLINIC A HUGE, MODERN LABORATORY « FINER ROAD TESTS * Federal Bureau to Have Permanent Place and Improvements at Abingdon 9 Station in Virginia. . By S. R. Winters. THE Bureau of Public Roads of the United States Department of Agriculture is soon to have a permanent research station bn the George Washington Memorial Highway in Abingdon, Va. Since 1914 the bureau has dreamed of occupying permanent research buildings and having model testing grounds. This year the dream be comes a reality, for the Government plans to start building the Abingdon Research Station this Summer. For 26 years the bureau has been established in Arlington on land desig nated for the War Department. The buildings there are temporary, make shift, frame structures and are in adequate for efficient experimenta tion. The new location for the testing grounds is very picturesque. The acre age of the new buildings is part of the 15-mile stretch of land adjacent to the historic Mount Vernon home which has been bought by the Gov ernment. This land was purchased with intention of preserving the beauty of the surroundings, and with the deliberate plan of frustrating any attempt to obtain the land that might be made by industrial exploiters fa voring the location near the national shrine. In keeping with the sur roundings, three spacious, dignified. Colonial buildings, whose design has been approved by the Fine Arts Com mission, will form a neat group of structures on the highwy along the Potomac shore. When the testing plant is com pleted. the United States will boast the most outstanding highway re search station in the world. New eqipment, designed with a view to per manency. will be added. Each build ing has been planned to accommodate the specific type of research that it will house There will be a special building for bituminous and subgrade investigation, another lor concrete, structural and non-bituminous studies, and the third building will contain the machine and carpenter shops, where apparatus will be made and tested. The most modem system of air-condi tioning will be used in those rooms where temperature is important in the testing of road materials. There will be several outdoor testing tracks for the purpose of studying the behavior of concrete under a series of varia !e conditions. 'J'HE outdoor tracks are of special value in the study of road-bui.i lng. Modern roads do not wear out as a result of the grinding action of autos on high top surfaces. De terioration of pavement results mainly from the workings of the forces of nature. Testing teaches what these forces are, and what composition of concrete best checks their action. The element of time is important in a •tudy of the effect of natural condi tions on paved roads. The outdoor tests will be applied to a study of na ture's forces for a period of years The bureau will work with several different types of surfaces and will have adequate means of testing each mu a result of careful, technical study. The main job of the Bureau of Pub lic Roads is to see that Pederal funds appropriated for highways are properly spent. In order to carry out this ob jective conscientiously, it is necessary for the bureau to engage in research. The United States has the greatest network of roads in the world High ways are constantly being ouilt and re built. Each year brings new improve ment in road building Methods of highway construction have been devel oped largely within the last 25 years. Each year travel is smoother and safer. The finer, more durable surfaces have been achieved through experiments and laboratory work. The increase of compressive strength illustrates the vast improvements in road making that can be brought about through laboratory testing. From 1915 to 1920 a compressive strength In concrete of 2.000 pounds per square Inch and less was most frequent. En gineers today require strengths of at least 3,000 pounds per square Inch, and, occasionally, they see fit to use strengths up to 4,000. Tms great gam in strength, which means a great financial saving, was made by no single discovery. Engineers decided on the final composition of concrete as a result of technical re 'ports based on thousands of careful twts R E. Royall, senior highway engineer of the Bureau of Public Roads, says: "Mixing concrete is like mixing A | cake batter. Change one of the in i gredients and the cake doesn't tastfc ' the same as the time before. Con crete is that way. too. When mixing j concrete, great attention must be paid ' to the mixing of the proper ingre dients." FORMERLY materials were mea sured by volume. Now they are weighed for increased accuracy. Con crete is more carefully compacted or made into a dense mass and is far bet ! ter than earlier concretes. Engineers I have developed a system for curing j concrete after it has been properly ‘ placed. Great care is used in mixing the correct amount of water and in thoroughly compacting the concrete after it has been placed on the road. The knowledge of these Important facts , led manufacturers to produce road , machinery equipped with apparatus for gaining exact control of water. There are other machines used especially for ! the compacting of concrete. Scientific analysis has been made not only o< concrete roads but of bitumin ous as well. A good bituminous road must have stability. The two materials which are used In this type of road are asphalt and tar. Over at Arlington, trial mixtures of these materials are tested in the stability machine. The machine indicates when rounded, soft particles, too soft an asphalt, or too much asphalt, are present. These ma terials must be eliminated, for. if they are not. the result will be a road which loses its shape under traffic. Of recent years there has been a great saving in the cost of building roads. Engineers have discovefed that roads could be laid with cheap local materials and finished off with a sur ! face treated with tar or asphalt to make them waterproof or dustless. Not many years ago it was considered risky to treat gravel or soil roads with a bituminous mixture. On some roads the surface peeled off and became so bumpy that a good deal of plowing up or reshaping had to be done. After I years of laboratory work and exposure of samples to the sun, the qualities that are necessary for a satisfactory, enduring road were discovered Tests were then devised to insure the neces sary characteristics in purchased ma terials. I One of the most amazing discoveries made by the Bureau of Public Roads engineers has been the development of an instrument called the "pene trating eye.” Bridge engineers have found this mechanism helpful. When a bridge builder desires to know how deep he must dig to find solid rock to use as a foundation for the support of his bridge, he can secure aid from the Government testing grounds. One of the public roads' men will be sent to the scene equipped with an elec trical apparatus of a convenient, port able size, some wire and a few blast ing caps. TNe first thing that he does is explode the caps into the ground. He then measures the time for impulses coming through the ground to reach points at different distances from the explosion It takes only a few minutes to estimate how much digging would have to be done in order to meet rock This task would ordinarily take several days with the common drilling method. _ LOW-COST SERVICE OFFERED TO POOR .-: Georgetown University Establishment Has 79 Chairs With Latest and Best Type of Equipment—Effort Made to Avoid Competition With Dentists in Private Practice—Specialized Work Undertaken. - - - . .- - 4 (1) Anatomical artist. Drawings, wax models and lantern slides are made of anatomical structures for pur poses of instruction. (2) The library. Fn this room stu dent and practitioner have access to over 1,200 volumes of scientific reading. (3) Rev. David V. McCauley, S. J., Ph. D., regent. f4) Dr. W. N. Cogan, DD. S., LL. I)., D. Sc., F. A. C. D., dean. (5) General operating clinic. In this clinic all single fillings, crowns and bridges, prophy laxis and general operations are acomplished. (6) Gen eral exodontia clinic. Here all simple extractions are accomplished under careful supervision. (7) Group dem onstration in denture prosthesis. (8) Using large, over size models of teeth for group demonstration and study. (9) Sterilization room. - < By William Bell. WASHINGTONS poor now can receive dental treat- j ment at one of the finest dental clinics in the coun try—that operated by the Georgetown University School of Dentistry. That the clinic is among the finest is not just a boast of its sponsors but a fact attested to by the compliments of experts and by the quantity and quality of clinic equipment. Newest addition to clinical facilities is an oral surgery room in the medical and dental school building at 3900 j Reservoir road. University officials ! believe it has no equal. It is equipped to accommodate eight patients simul taneously. Light from numerous win dows streams on a gleaming array of metal instruments, white tile and ! porcelain. This rocm has only been in opera tion hut a short time and is a far j cry from the one-chair equipment ! which was all the school clinic had when it began. As many as 40 patients can be treated in a morning, it is estimated. Sterilization facilities are in charge of a registered nurse who supervises two ultra-modern steam sterilizing i machines and the solutions in which instruments are kept ready for imme diate use. The surgery in this room is chiefly tooth extraction, although fractu;ed jaws are set and other serious surgical operations of the mouth are performed by senior students of whom there are 75, under the watchful eye "of trained instructors, themselves experienced dentists. Some of the instructors are among the best of Washington's pro fessional dentists. Three always are on duty during mornings and one in afternoons. Two in private practice come every day to be sure the students do a professionally competent job. 'y'OOTH trouble unfortunately hag no economic barriers: the poor have it as well as the rich. The George town Dental Clinic does not offer a free service. And yet it does not wish to compete with private practice where the patient is able to pay. It charges fees small enough to make it possible for poor folk to obtain quick and safe relief from pain and complete dental service. Without this clinic and one at How ard University, which cares for col ored patients, many pel-sons unable to pay for expert attention would be forced to place themselves at the mercy of charlatans. The George town clinic charges $1 for a simple extraction and correspondingly small fees for other services, depending on their type and extent. If the patient shows, however, that he is in pain even though "flat broke" and unable to pay at any time for the required dental treatment, the clinic will not turn him away. Patients are registered at a hall desk in the medical school building. Then they are taken one by one, or two by two, to an examining room where a diagnosis is made. There it 's de termlned what teeth should be re- j moved or if filling or other dental work is needed and where. The students suggest that all pa tients have X-rays taken. If they cannot afford this, it is nevertheless done before any extraction. If the patient is in pain the X-rays are de veloped immediately and the opera- I Won performed. When there is no pain the patient is told to return the following day, by which time a diag nosis, aided by X-rays, has been com pleted. The X-ray room is equipped with the most modern, shock-proof machines. Operators are protected by a lead shield and leaded glass "peep holes.' Automatic timing devices determine the length of exposures. Patients may not remove the developed X-ray films, it being a rule that these are the prop erty of the clinic. Reason for the rule: The clinic does not wish to “do" private practitioners out of X-ray fees. Some unscrupulous patient who might be well able to pay a practicing dentist for his service might have it done at the clinic if allowed to take away the films. Likewise, the films are needed for teaching purposes. p ■ - • I - . J7ACH student is assigned a patient and must follow his case from be ginning to end. This procedure is de signed to give students the practical experience of running an office which they will need when they "hang out their shingles.” ^ Most impressive of all the clinic’s elaborate equipment is the room where filling and bridge work is done. It looks a block long, has 79 chairs and 33 window's. With each chair, of course, is a complete dental unit, electrical drill, sprays, etc. Then there is the orthodontia branch of the clinic which performs the highly specialized service of straightening teeth, principally children's teeth. Children with mis shapen mouths and distorted teeth which threaten serious effects later in life can have these maladjustments treated at small cost. jVEOPHYTE dental students, before they are permitted to do clinical work, practise on over-size teeth mod els. preparing and filling cavities in teeth as large as one's finger. When they have become expert on the "giant" teeth, they are made to prac tise on smaller models about the size of actual teeth. These are mounted in artificial Jaws, which simulate the muscular movements of real jaws. All materials used in the clinic are twice tested. Only those materials approved by the Bureau of Standards are bought from manufacturers. Each shipment then is subjected to careful tests in a laboratory of the Georgetown Dental School. In this way. students learn to do their own testing, so when they become professional dentists they can learn for themselves what ma terials to acept for use. ABINGDON RESEARCH STATION ARLINGTON COUNTY VIRGINIA , BURE All OF P#!HLIC IINIIKP STAIRS l*tr \ RT MI NT OS AG RlC OCCURS CAMPAIGN FASHION i . . 4 Radio and Plane Represent Climax of Ways to Sway Public, but Future Sets No Limit to Ingenuity. By John L. Coontz. N JULY 4, at Monticello, Presi | I dent Roosevelt will inaugu V J rate the Democratic drive for the presidency. Oov. Landon, Republican oponent, has already plunged into the political stream and is looking daggers, figuratively speak ing. at President Roosevelt on the bank. So swiftly do time and science move | in the four-year interims between presidential elections that we may ex pect most anything to be employed in their conduct when they get under way. For instance, four years ago the airplane was introduced into the strug 1 gle, the first time in history. This was when President-elect Roosevelt flew from New York to Chicago to address the convention, just before closing. Will the airplane play a part in this year's field campaign, now that it has been introduced into national politics? Stranger things have happened. The ! country is big. the high spots to be touched are far apart, and speed in covering them 1s something to be de sired. A plane campaign would mean less wear and tear on a presidential aspirant s nerves. It would afford him opportunity for more leisure than he would get otherwise. * However, plane or no plane, not so ! with the radio. This year the Nation ! will almost see it worn out by the presidential candidates. Hook-ups will be unsurpassed, territory encompassed virtually infinite, and population served the maximum. The> radio saw its introduction into | presidential politics in 1924. Remem i ber sitting out there under the shade of the old village apple tree with the ! only set in town blaring forth between fits and starts the events as they transpired in Ngw Yo>k? Remember Alabama's famous stand? “Twenty-four votes for Underwood?” And the storm that came in and around Lorain. Ohio, breaking up the | telephonic connection right at the time | the balloting was the hottest? 'pHIS mouthpiece of presidential seekers, however, failed to make the grade in the months following the nomination of Mr. Coolidge. The rea son given at the time, as revealed by the yellowing newspaper files in the Library of Congress, was lack of broadcasting facilities. Not enough stations existed throughout the coun try for a national hook-up. Mr. Coolidge, in this campaign, it w as announced, had planned to use the "mike" to carry his side of the national argument for the presidency to the people. Likewise, Mr. Davis' campaign managers had expressed a prediliction for the grilled mouthpiece. But radio broadcasting on a national scale was so much in its infancy that the project for campaigning by this method had to be giv en up. But not so in 1928. By 1928 the radio had got to be a big, strapping fellow—at least we so thought. In this campaign Smith and Hoover both used it freely, reaching millions of their fellow citizens without moving out of their platform tracks. When we go back of the radio for presidential spellbinding we hit the “front-porch" method. Presidents | Harding and Wilson both used this ' method of reaching the public. Mr. Harding, however, did not "sit ihe campaign through.” This was be cause his oponent, Mr. Cox, took the stump early in the fray, compelling him, after much persuasion on the part of his friends, to take to the field j also. But up until that time, both at Sea Girt—"the Little White House”— in New Jersey and at Marion, both Wilson and Harding entertained "pil grims” In the "cause.” sending them away, inspired and flaming, to gather : in more zealots. A popular belief is that Mr. Wilson introduced to American presidential campaigns the "front-porch” ap i proach to the White House. This is 1 not the case. howqr er. The father of | the "front-porch” campaign was Wil liam McKinley of martyred memory. Following his nomination at St. Louis in 1896. there began to come to his home at Canton, Ohio, a flood of loyal party visitors and workers. These brought him messages of his cause with the people throughout the Na tion, and the gold question then being fiercely In the foreground, these mes sages were fraught with deep and grave meaning It is doubtful If a campaign by Mr. MAinley, as prac ticed by his predecessors, would have gotten him a single more vote than he received. The greatest orator of his day was pitted against him. a man I who swayed the populace as no other man in American history, perhaps I (unless it be Andrew Jackson)— William Jennings Bryan. Looking back over that campaign one can but feel that men’s minds were terribly wrought up over the burning issue of the day, and that a "front-porch” campaign was the best and most : feasible method of “settling” it. To Vice President Roosevelt was left the task of "swinging around the circle." rpHE person*! political campaign, as • we know it today, dates from the first administration of Andrew Jack son, 108 years ago. Jackson believed himself to be a victim,of a «*>alition ‘ rvpt u ppn AHome artri Plan referred to by hi*' partisans as the "bargain between the Puritan and Blackleg." The duel between City and Randolph came out of this charge. Clay becoming incensed at a state ment by Randolph on the floor of the House regarding the professed bar gain. When the campaign of 1828 rolled around, therefore. Jackson, with po litical blood in his eye. went after his opponents. A man of vivid, pow erful and dominating personality, still the hero of New Orleans and the liv ing soul of the irrespressible, rising decccracy of the day, abused and de feated of his rightful heritage in 1824, Jackson aroused and caught the imagination of the public tremen dously. Jackson opened his campaign in 1828 with a gesture calculated to astound the public and confound his opponent, Adams. No one had ever seen its parallel and the novelty, newness and basic democracy of it called forth a corresponding en thusiasm from the rank and file of the population. It began on the 8th of January—the anniversary of the Battle of New Orleans. The site of the celebra-lon was the city defended by him from Packingham's forces, and the iron warrior attended as the guest of the State. Delegations from the rest of the country were invited to do honor to the glorified idol, and they came by the thousands. Jackson made his progress to the fair metropolis of the South one of a conquering deliverer in triumphant array. Dcwn the broad bosom of the Mississippi his steamer made its leisurely way, and he w'as met by a delegation of Louisianians at Nate he*. A procession, banquet and ball marked this stop, and then, arm-in-arm. so to speak, the two steamers proceeded on down the river to New Orleans. "Twenty-four flags waved from her lofty decks.” says a chronicler of the progress of the Pocahontas, bearing the general to the scene of his former conquest. A constant roar of artillery reverberated from the banks of the Father of Waters as the favored ves sels. augmented by a whole fleet at others now. slipped through the spar kling waters. Jackson placed himself on the rear gallery of the Pocahontas, in plain view of the multitudes lining the river banks, in every kind of craft imag inable, and interspersing the roars at the fleet artillery and shore batteries with roan from their own deep lungs.