‘The Investigation of Dust Conditions 
in Schools 
Positive Proof That Dust is a Menace to Health 
$ only in recent Phe that science has 
ica to improve the eos conditions 
of our school buildings. Among the most 
interesting = enlightening of the various 
mts conducted, have been those 
de = ‘dust and tn etalon to the 
“trmsmiasion ai contagions disea 
ster defines’ “dust” se: “fine, ‘dry particles of 
ger of dust co 
a lecture halls, 
Ontagion is greatest. 
laboratories, audi- 
= 
to aay regardin 
: DEARDRS OIL com PANY 
oo 
be reduced nearly one hundred per cent, _ that 
the only es Ser method of accomplishing the pur 
Z the floors with a pete that 
teh and hold the dust particles but 
eT the disease baci as W 
I of t splenaia results obtained from 
Standard Floor Siscasivg: 3 use on woo 
annot be too highly ‘r kL etet anit: whether for 
applied to any foor the 
ome. 
Standard Floor Dressing 
is, at the present time, being 
di 
e er o 
pe poe Be 
educational 
Stay great merc 
houses and public c buildings 
e forit. 
an excell floor preserva- 
tive, as it prevents splintering 
nd cracking of the woo 
tandard dad Dressing 
Ss very reaso in. price, 
sa treat- 
way. or 
ments a year with the patent 
St iler affords t 
most satisfactory results, as 
h ng is then evenly 
distributed over the floor sur- 
a It pays for itself many 
times over by saying labor. 
As there is no dust in rooms 
with floors poet with Standard 
weeping is made a pleasure, and th an be 
jean mid in an absolutely ate politic 
‘ost, 
Asa “cream “e * efficiency, we are ak 
ing to treat one fico oom or corridor of an 
school or public ‘hte with Standard Foor 
Dressing, and AT OUR OWN, EXPENS 
, To. lo calities far removed from our agencies, We 
m Heguest we will send —— Te ate 
k, “Dust and Its Dangers 
g our free trial 0 
