The Rock Island Argus and daily union. (Rock Island, Ill.) 1920-1923, 1922-08-01

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Public Health service. 4 water
color painting Of griins Of dust -
highly magnified that you can see
the sharp edges Of some grsins and
the jagged. saw-like edges OF others
Is one Of his latest works. A dtf-
ferent style OF art Il represented By
q pen ana ink drawing on his stu.
do wall, showing = cross section OF
q straw tick with myriads Of para
sites swimming Id it, blood.
All about the wall hang other ex-
amples Of the scientific artiat's
skill. They are not the soFt at pic
lures. that you would buy to hang
in the parlor, but they are painted,
many OF them, for the bensfit Of the
public.
You may have seen some Of this
artists work in Public Health ser
vice pubiications-maps Of cities
showing disease areas, pictures Of
the muscle groups Of the body. 9
flea highly magnified, shoe that
will cramp the foot diagramed t.
show how the distortion occurs.
In its attempts to show the peo-
pie the dangers Of disease and the
great need for preventive measures
the Public Health service keeps Mr.
Wilder busy at his easel making
several hundred illustrations
year. The government doctors and
scientists have found that de-
tailed verbal description of how 8
mosquito implants malaria para
sites in the body 10 far less impress
sive than a highly magnified pic
ture Of the parasite entering thu
proboscis OF the mosquito. 4
short description with the picture
may tell how the malaria germ
gets into the mosquitoes salivary
ducts and is transferred to thu
| wound that the mosquito inflicts
The observer seeing with his owl
eyes the enlarged mosquito in al
its dangerous ugliness goes out de
termined to slay the pests with in
creased vigor. The picture does Il
Just now a number of Mr.. vii
der's newest art works have beel
sent to Rio de Janeiro to the cen
tennial exposition. Some Of them
painted on glass, represent . new
development in scientific art.
Using . Microscope.
A microscope has always beer
regarded as the most lucid way o
showing scientific wonders to tn,
public. But II you have ever beel
offered peep into q high powel
microscope you know that a shor
glimpse at the object on the plat
is rarely satisfactory. Even a per
son accustomed to using scientifi'
apparatus may have difficulty il
focusing the instrument. Mr.. Will
der says that he never likes to us'
any microscope except his own be
cause it takes several days to &c
used to a strange instrument, evel
if it is Of the same make and typ
as his own. So it is not strang'
that the public, offered a quicl
view of few interesting germs a
some exhibition, rarely gets a goo'
look. Nothing, however, seeme'
SO convincing to the layman as
microscopic plate, and the Publ
Health service often packed an
sent out 16 instruments to healtl
exhibitions.
A few months ago, though MI
Wilder experimental with som
water color paintings Of parasite
on five-inch squares, of glass. Fac
Of these was put in the bottom 9
a fairly deep box and a glass cove
was fitted on the top. The resul
was a view that stood out in relic
just as the microscopic plate dit
and the painting was larger an
did not have to be squinted at
brought into focus. The transpal
encies went to an exhibition in Chi
cago and doctors and other visitor
approved Of them highly.
/ Among the glass paintings ser
to Rio de Janeiro are a number Z
pictures showing the dangers {
dust. Mr.. Wilder went into tn
street and got some samples tina
he thought typical of municips
dust. He magnified them highl
and painted them on glass.
Seven eighths Of the grains ha
cutting edges like glass were cry
stalline products, probably th
; finest sand. Cinders were in tn
dust too, and the microscope show
ed that they had saw-like edges, II
furious to the cars and eyes.
took a microscope charging th
dust 500 times to show clearly til
character Of ordinary dust. II
moral was so ohvious that It ws