Show 0 01 1 parm to determine chy cotton fabrics out the V 1 S beleau ot of homo home economics 1 C has m made a de a laboratory test or of sheets h e is di sc by a big hotel the results or of the tests have been submitted to manufacturers of who are trying to find ways to sheets which will wear longer in parts where these gave out not a matter of great national importance ta nee perhaps but an illustration of 0 way in which scientific research by government gover ent aids manufacturers and incidentally ciden ci ra ily helps to provide the with better goods M economists statesmen and capitalists are hunting for new industries to take U up p the slack in permanent employ employment ment resulting from the extensions of laborsaving devices in established industries one thing that Is being seriously r considered on by one of the great concerns which manufactures mechanical devices Is a machine which can be installed in the home like a radio or a refrigerator which will cool the house or at least the room it Is la in in summer in the laboratory it Is possible to do this now what Is needed Is the development of this on a commercial scale to sell at a price within the reach of the average family in time and perhaps in a very shott time something like that will become a great industry LANES for the first time since flying was invented anybody can now buy a serviceable vi up to date plane complete with engine and all necessary equipment for less than 1000 that does not mean however that flying Is about to become as popular as motoring for one thing an airplane still needs a lot of room from which to take off and land in it Is not adapted to the use of the city dweller parking apace tor for airplanes Is not easily east ly found nevertheless young folk are practicing flying in increasing numbers numbers and n d planes are being steadily imp improved v ed as to ta stability and durability in the air thousands more lives will be sacrificed before the sate safe airplane Is perfected but it is safe to say that la in another fifty years the air will ill have lost most of its dan ger CONCRETE in writing the history of hunna human n progress it a thousand years from now one ol of the important mile milestones tones which will have to be recorded wll will be the invention of portland cement in the enry eary 1800 s the use of conce rete consisting of portland cement and sand gravel or crushed stone is one of the great advances made practically ta in our own time it Is still so new that all of its possible applications have not been realized an improvement in concrete making it at once lighter and more nearly fireproof has just been developed tests by columbia university experts proved that it resists a temperature of 1800 degrees slid and weighs less than a third of ordinary concrete bulk for bulk it Is made by adding aluminum powder and soda to the aggregate the aluminum generates by hydrogen drogen gas and makes the concrete rise like bread so that it takes only a third as much to fill a given space two inches of the liquid mass rna s poured tor for a floor for example will rise to nearl nearly esix six inches ties thick drying ns as it expands fireproof and heatproof homes will bo be regarded as necessities a hundred years hence HEST BEST A ten minute rest every two to or three hours la Is a better stimulus to continued efficiency than lopping off an entire hour from the day the B bureau u ot of the U S department Depatt ment ot of la labor b r reports r tests testa of the recuperative power ot of the human machine have proved that it takes lour four times as a long lor for the muscles to rest ahen th thy thoy y have been worked to tho the endurance limit as it does docs tor for them to regain their tone after working half as long in n one large new york publishing house ouse there Is a ten minute rest period st t 1030 in the morning g and another nt at 3 in the afternoon alter noon the same office closes down nil all day saturday from april to october its record of 0 production Is higher than in any office ace with which its work has been compared mental workers as well as physical ers benefit by complete relaxation at frequent intervals |