Show I i Experiments at University i Are Successfully Completed I I HE experiments which have been b bI r THE T conducted in the department of I I bacteriology at the University of Utah to determine the relative value of If the I different strengths of formaldehyde gas gasI i I concentration for the destruction of j I bacteria were completed complete this week The i results of the experiment show that the i strength of gas used by the school I board for fumigating is sufficient to do good work providing careful precautions precautions precautions are taken i j jIn In the work as conducted emulsions i iI of typhoid bacteria were made Some SomeI I 1 of or the emulsion was placed in open I I dishes some in muslin with two thick thick I nesses of cloth some with one thick thickness thickness i iness ness and others with three j i iThe The test emulsions were placed in the I room to be fumigated and all of the window cracks and openings into the I room were carefully plugged I The first test made was with six and l I ounces of potassium perman permanganate permanganate and sixteen ounces of formaldehyde formaldehyde formaldehyde hyde to each 1000 cubic feet in tho the I room This Tills Is the strength of concen concon concentration used in the fumigation of the nubile DubUc schools In the second test made thirteen ounces of potassium and ounces formaldehyde was used for each eath i U cubic feet and ard in the third i i ounces of potassium p IJ and ounces i formaldehyde were used In checking du up the results it w I found that in the first firt test all of tl Ui typhoid germs were killed but a R i p pr tive result still MUll remained for the ste t In the second test all the germs were killed and in the thir test all were killed In the first test some of the which were in open di n s were not killed so that it could be con concluded oc occluded n eluded that the strength of the ton corn of the gas would be t tto to kill all of the ordinary disease germs such as smallpox diphtheria and t ty typhoid if all of the cracks in the room rom were tightly plugged If this was n r t done it Is doubtful if all of the germs i would bo be killed If however the second sec second ond concentration was us used l for the fu fumigation fumigation fumigation and only the tile ordinary meard of closing the rooms were taken the fumigation would be effectual b |