. tories, was given. used c. onion..- ‘ Show ‘l’n’lhic’d’iimo ' g All Armour risesmhiy Last Thursday at a joint meeting of the Armour and Lewis Institute ' branches of the A. I. E. E., hold'herc, a program of talking movies, fur- nished by the Bell Telephone Labore— Muny of the Lewis students arrived some time previous to the assembly, enabling them to make an inspection of‘ the school. A number of senior electricals under the leadership of J. MuMacDonald took groups of these guestsvon trips throughout the main building and to those laboratories osé they might be interested in. In preparation for the meeting, ‘ talking movie apparatus had been in- stalled in the assembly hall. The principal parts of which were a pro- jector, not greatly unlike the ordi‘ nary projector, and an amplifier with a loud speaking device. The projector is the same as stand— ard except {that the speed is greater, twenty frames per second, and sound reproducing device is built in it. Along side of the picture, on the film used, is to be found a strip of light, of varying value. As the pic» ture passes in front of the lens, this strip ‘also' passes, at distance of 12.5 inches behind the picture, between a small lamp and a photo electric cell. The impulse generated by the photo electric cell is fed tothe amplifier, and greatly increased in value is used to actuate a cone speaker of the con- ventional Western Electric design. This speaker was concealed behind a novel perforatodfisc‘reeu, doing away with the effect-.oliseeiii'g of picture- at'one point and hearing the voice come. from a different point, so no— ticeable ‘in ’mairiy talking movie in‘- stallations. , Mr. L. S. O’Roark, information mon- oger of the Bell Telephone Labora- tories. addressed the meeting. He wished to dispel any belief, that in spite of all the. marvelous things ‘al— ready done by science, room for re- search was exhausted“ He citcdrthe fact. that. such .a. seemingly commcn~ place thing as the resistance of. a ma~ teriel to the flow of an electrical current, is hardly understood it all. He predicted that in the lfuture, professors would be rolievcdof much of the routine work of lecturing to ,classes, by means of the talking movie. As an illustration of this, two reels of talking pictures were shown, in which the operation of various pieces of telephone equipment were ex— plained. In presenting these Mr. ‘ DANCE, CHAERM‘AN The Sophomore Dance, Friday in the Grand Ballroom of the Hotel LaSalle, attracted about onel hundred couples. of. the school dances held during this ' school year. - According to R. N. Wil— son, sophomore social chairman, only eighty-five bids were sold and there- SUCCESS, Lack of numbers, however, nothing to do with the success of the for, dance in other respects. The music was furnished by Lew Diamond’s Ball Tabarin Orchestra, 3 Benson organi-. nation, which was all that the commit-l tee claimed that it would be when it comes to playing good dance music. As a special attraction Byron Nevfl. ‘lmown admirers for the collection of ier, the dancing architect, and a. beau- I O’Roark pointed out that they were also laboratory experiments in anoth— er field, but in common with any lab- oratory experiment they were not al- ways completely satisfactory. Before the program of pictures was completed, it became apparent that furthcr'opemtion of the projec- tor would be impossible due to re- peatcd burning of the film as it passed through the frame. Biscues “llnlniliition” At A. QC. S. Meeting Tomorrow evening at 7:31}, the American Chemical Society will hold its February meeting in the CityClnb rooms. is to be Dr. H. N. Alyce of the Uni~ The speaker of the evening ' versity of Minnesota. His subjcCt will ' . > be “Chain Reactions and the Mcchorh ism of Inhibition.” Dr. Alyce. is one “ of the foremost authorities on inhibi« tion, and he, will present a suitable theory to explain this phenomena. Science has recently discovered that negative catalysis of inhibition is just an interesting and fundament- al as is. catalysis; products that de~ teriorcte or spoil can be preserved by adding traces of substances called “inhibitors.” It has been pointed out that inhib- itors cannot be discovered by the trial and tribulation method. it must first be understood how inhibitors work. The research laboratories dur- ing the past few years have done much to answer the question, “By _ what mechanism can o. tiny quantity of inhibitor exert so powerful on in- flucncs‘!" This lecture should prove profitable to all those interested in chemistry. reconstitution new PRICES, son or BAUEWS RESTMUMNT fiNDEANA, end, 83st STREET n. N. WILSON, ’31 1 ___._. Sonia dinners Turnout Poor, hut Good Time Won hind Ry All, Etc. fore the dance was not a financial “Gilli PEONEERENG »: ‘ ‘ , ” neurons recs sows Afllt’ifrdli. FGWER’ SHGW ATTfirhéETS Iic’ANY STUQENT‘S The fourth annual Power Show and Midwest Engineering Conierencc was held at the Coliseum February 12 to There were over four hundred and sixty displays by macaw facturers of mechanical products, ranging from a Dcisel switch engine in the booth of the Fairbanks Morse Company, to an automatic saw sharp- ener, which may have improved the saw, but certainly was hard on ono’s “1 Sir. Fire Protons 35cc ' itihllfs liigh duets , On Friday, February 8, a group of Senior F. P. E.’s, about twenty~five ' in number, went to the City Hall to make an inspection of the central alarm station of the Chicago Fire De~ pertinent. They witnessed several calls going through and turned in some alarms themselves, learning how the city is covered in times of as y conflagrations. From the City Hall they went to ' the Franklin Street Bridge where the Fire Boat, Graeme Stewart, is locat- ed, proceeding to make an inspection of it from turret nozzles to boilers. , 0n the following Friday, February 15, the senior F. P. Efs visited the Chicago Fire Patrol No. 5 at Hill and Orleans Streets, where the fire patrol— men’s school is located. Their truin~ ~. ing school resembles the Underwrib ', ers’ laboratory in miniature. The 1 only thing the seniors didn't do there ‘ was go on a run with the patrolman. 16 inclusive. work. «l H... til'ul little Spanish girl gave those held 1,3, present an exhibition of how the Tango should be danced. The chaperones for This was the third were: Dr. and Mrs. ll. M. Raymond, Dean and Mrs. C. I. Palmer, Prof. G. A. Tibbals and daughter, Prof. and Mrs. J. F. Marigold. The members of the Sophomore So~ cial Committee were: R. N. Wilson, had chairman, M. C‘. Larliin. F. M. Pfei- F. M. James, J. M. McAicor. Both the the dance LlBRARlANS THANK DONORS Mrs. Sanders and Miss Rowls, li- brarians at the Burnham library, Art Institute, wish to thank their un-v MUSHC valentines which they have received. 9103 l RED-HOT HARricon 1‘5. All week long, groups of students took the opportunity to visit those in— teresting exhibits and converse with men already engaged in ‘ was a “Combustionec?” Stoker in ac- tual operation in a full size furnace, showing exactly how the firing was accomplished. The exhibit of the New Departure Mfg. Co. contained a very clever dis- play. From an opening in a. case, three quarter inch steel balls were dropped a distance of a foot and one- half to strike on a metal surface, re- bounding through in bearing race to fall on a second metal plane and be so deflected as to re-cntcr the case several feet from where they issued. When in operation, one ball falling but a second after the previous one, a. very amusing night was presented, the balls seeming to follow one an- other as if fastened together by some invisible means. Fags Three , TEETA Xi The Armour Chapter of T was host to several members em chapters on their way to 1‘ noel convention of the Fraternicy mg held, in San Francisco, Ca} nia, thds Week. E. P... Rowley, ’85}, .~. Armour Chapter’s delegate. A banquet was: given last evening at the Inter—Zraimity of Chicago for delegates from the chapters of Theta Xi near Chicago and east of here, heforc they boarded a special train for San Francisco. Several members of the humor chapter attended the banquet. The: Armour Chapter of Theta E wishes to announce the pledges; of: A. W. Griesman, ’31, .3. E. Taylor, ? 5. ’32, and E. P. Richter. ’82. Soon word was passed around as. to where hydraulic handbooks, catalogues giving specifications hoists, pipes, and key rings were to 'be had for the asking. Much interest seemed to be shown in the several displays of automatic stoking equipment. displays varied as to size and in cer- tain other mechanical features. however, sought to enable soft coal to be burned smoiiclessly with the convenience of oil, yet at a cost lower than hand fired coal. “Iron “Combustioncer” models suitable for economical opera— tion in the smallest of homes. There W’e Fireman” displays greet stereos thorn whens sends ET was unprofitable wilderness, most ’ men thought. But james j. Hill had faith that it could grow wheat and so he built his railroad. Settlers turned the wastedand into wheat-land, the wheat into Wealth, the wealth into great west- cm states. Faith in the economic future still points the way. Right now men in the Bell tories of counncrcc. BEfiL SYSTEM: v1 notion—wide guitar?) of" illtcnwrwertisg fr?££;:d;:;=5$5 WORK. ions 5 is l System are planting the seeds of vast pos— sibilities for even better comimmicatiou. Out of the belief that the public needs a broader use of the telephone is grow— ing a constantly improved long distance telephone service. Like the railroads oi: an earlier day, this sender is now topping and helping to deveiop rich new tomb of The individual All, and showed Protection oi Freight Transportation, to be efficient, must be not only rapid but safe. This applies to both pas— sengers and freight. In their freight business the railroads are in— trustcd with the safeguarding to destination of approximately 165,000 newly loaded freight cars every Working day. Since most railway freight spends several days on the road, the value of the total amount of freight in the pos~ session of the railroads at any one time must run into the billions of dollars. To protect this freight from damage, robbery and loss through misdirection is a task requiring the co—ordinated efforts of many thousands of railway employees. Besides inspecting carefully the condition of cars and insisting upon certain standards of safety in the packing and stowing of freight, the railroads school their trainmen and enginemsn in the proper handling of their trains, even go— ing so far as to check up. by means or" impact- registers, on the degree of roughness in the ham- dling of individual cars. Every railroad of any size has its own police department to protect its shipments from robbery. Station and account~ ing forces are carefully trained in the billing, checking and tracing of freight. Special doom- ments are maintained for the adjustment of freight claims. With all this care, is it any u—‘onsisr that rail way payments for freight loss and damage have declined remarkably in recent yams? Between 1920 and 1927, for example, the number of such claims presented declined: from ‘i,?21,§9? to 2,527,055, payments of all freight claims cic— clined from $119,838,127 to $37,346,313. and payments per car loaded declined fries: $22.68 to 72 cents. Robbery iosses per car in 192?, for example, averaged 2.2 cents—just s. trifle more than the cost of a postage stamp for a letter. Because of the safety and finmcial rescue bility which they present, the railroads feel well justified in soliciting the continued freight you? ronnge of the American public. Constructive. criticism and suggestions on} in— vitsd. l... 4h. fiQ‘WNS, P’s'exléeni, lllliooés genteel -y-imc:.. CHICAGO. Febrisry 35. 13239. dross L. A. Dm Chiceqo.)