The Chesterfield advertiser. [volume] (Chesterfield C.H., S.C.) 1884-1978, 1921-12-01
MAKE STRIDES IN
CANCER RESEARCH
Artificial Tumors Produced IN
White Rats by lnfesting
Them With Parasites.
x-RAY MACHINE IS IMPROVED
Rays Of Unusual Power Developed by
Recently Perfected Apparatus
Will Greatly Aid In cures-
10 Notable Advance.

VIII Greatly Aid In Cures-
10 Notable Advance.
New YOrk.-What In called "a most
Important and far-reaching contribu-
ton to cancer research is made
known by DR.. Francis Ca, .sr Wood, d.
rector Of the Columbia University In
stituts Of Cancer Research, endowed
by George Crocker, In a report to Pres
ident Nicholas Murray Butler.
Doctor Wood states that two Of the
workers I'm the Columbia laboratories,
DR.. Frederick d. Bullock and Miss M.
r. Curtis. Ph. D., both ranking as asso-
ciate In cancer tesea rch, have discov.
cred means Of producing cancer arti-
dcially In rats. Large numbers Of which
are constantly used In Columbia's
work Of cancer research.
After five years Of hard work."
says Doctor Wood, Doctors Bullock
and Curtis have finally shown that II
white rats be infested with the eggs
Of certain parasite and kept for q
period Of not less than eight months,
tumors will develop about the areas in
which the parasites are present, and
that these tumors are virulent cancers
which, rapidly kill the animals in
which they start and can easily be
transplanted to others.
''This Is not the first time that can
Ger has been produced artificially. 1t
Is just 146 years since the London sur
geOn Pott showed that certain types Of
cancer follow certain occupations In
which irritating substances come in
contact with the body. The best known
Of these types Of cancer Is the Chin
ney-sweeps' cancer, which developed to
such an extent in England that laws
were passed regulating the conditions
under which chimney sweeping could
be done.
Nance Forms Of Cancers.
"Other forms of irritation cancer are
the well-knOwn Kangri basket cancer
Of the Kashmlr nutive, the betel-nut
cancer on the inner surface of the
cheek among Malays and Filtpinos,
and the cancers following chronic X
raw dermatitis. 1t has also been known
that It is possible &c obtain consider
able number Of cancers In animals by
inbreeding cancerous strains, but some
y N,
the number of tumors SO obtained is
not always large, and the time of their
! appearance cannot be determined, so
that experiments requiring many tu-
mors cannot be planned.
I Another means of inducing cancer
has been by painting the skin of an
| animal with tar. This experiment Is
based upon the observation that work
ers in briquette factories, where the
skin of the hands Is constantly in con-
tact with tar, not infrequently develop
| cancer. Professor Fibiger of Copen-
hagen has shown also that cancers can
| by feeding the animals on q certain
parasite, but here also the actual per-
| centage of production Is small.
'In the method devised In this lab
oratory. however, the yield Is very con-
siderable, over half the animals Of q
certain strain developing cancer.
Doctor Wood quotes DR.. ]. A. MUIR
' ray, director Of the Imperial Cancer
Research Fund, London, noted inves-
tigatOr Of cancer, as saying recently
that 'one of the great disadvantages
which retards progress in the study Of
cancer Is the absence of means Of
mental animals"
! with the discovery made In this
laboratory" Doctor Wood adds. this
disadvantage no longer exists"
Doctor Wood reports the construc-
: tion of q new machine through which,
during the coming winter, will be add
ed, new and important facts to the
very vital question Of the treatment Of
cancer by x-ray."
Seek Hish-Power x-Rays.
There has been under considera-
tion for some time" he continues, dis
cussing experimental work, 1.-THE erec-
ton Of an apparatus for the produc-
ton of q direct current at high volt
ages in order to produce X-rays Of un-
usual power, as the limitations of the
commercial machine I'm certain modes
Of treatment are obvious.
"The matter had been discussed In
an informal way during the last two
or three years with number Of ex-
perts, among them Professor Duane
and Professor Davis, and at the last
annual meeting of the Crocker board
1t was proposed that the accrued in
come Of the Bondy fund be devoted
to the construction Of more power.
/ full constant current X-ray apparatus
! than had yet been attempted with the
necessary equipment to permit of ac-
! curate determinations In physical
units Of the exact quantity of radia.
tiOn given Off by the X-ray tubes.
"Many unforeseen difficulties in the
obtaining Of equipment and materials
have. of course, arisen, as Is usual In
the construction Of research apparatus
but the machine has already been run
for considerable periods, delivering q
| continuous current at high voltages,
| and gives promise that 1t will shortly