20 
prising powers of penetrating through clothing and fabrics, killing the 
mosquitoes, even when hidden under 4 layers of toweling, in one hour’s 
time — and with very dilute proportions. 
This substance, which has so long been disparaged as a disinfectant 
.because it fails to kill spores, must now be considered as holding the 
first rank in disinfection against yellow fever, malaria, filariasis, and 
other insect-borne diseases. 
