New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1896-02-15
ROENTGEN'S TUBES THE BEST
OTHER SCIENTISTS, AT LEAST NOW
THINK THEY ARE.
IN THIS WAY THEY EXPLAIN HIS SUPERIOR
WORK WITH THE RAYS-soME

IN THIS WAY THEY EXPLAIN HIS SUPERIOR
WORK WITH THE X RAYs-soME
RECENT EXPERIMENTS.
Although the expermenters OF good scientific
standing in this city are infuslng the greatest
energy into their work OF investigation regarding
the R6ntgen rays it cannot be said that they have
entirely realized up 10 the present time the anci-
nations many OF them formed few weeks ago
The view taken yesterday that Professor Rontgen
IA Withholding for the time being some vital ADJUNCT
of his experiments and that in consequence other
workers trying 10 follow in his path have not been
able to achieve as satisfactory results as ne mas
obtained, Is supported in many quarters
PROFESSOR PUPIN's OPINIONS.
sneakng on this point yesterday. Professor Pupin
said 81 cannot help thinking that R0ntgen has not
vet told US all he knows. But, from my own ex-
periments / must add my opinion that whatever
he is holding back is not OF such character as to
be insurmountable 1t is. perhaps likely that Ront-
gen was able to get better tubes. with higher
Vacuum than ours and 1t is also probable that he
had an aluminium window. Professor Lodge. Of
London in an article which he wrote for the Eng
lsh Electrician also expresses the opinion that the
reason why other expermenters have been unable
TO get such good photographs as Rontgen Is that
the latter had the advantage OF higher vacuum
,rh.. than eny one else has so far been able to
obtain
FAIR RESULTS WITH ORDINARY TUBES.
Predecessor Pupin expected TO have begun yester-
dav the demonstration Of the qualities of his new
apparatus for the better concentration OF the radi-
ance but was unable to do so because ne mad not
vet received the high vacuum and specially pre-
pared tubes with which he intends to conduct his
future experiments. With the aid OF his new
static machine. however DR.. Pupin obtained some
fairly GOOD results yesterday In conjunction with
the ordinary vacuum tubes which ne mas hltherto
been employing The outlines Of these photographs
we're clear and distinct. but, as Dr. Pupin pointed
out to Tribune reporter. they were not suniclenty
dense for medical purposes. 1t may be mentioned
that Dr. Pupins experiments are devoted entirely
TO the object OF proving either the desrabnty or
the futility of applying the rays TO Investigations
In surgical cases Upon the result OF his expert
ments depends the decision Of the authorities or
the Presbyterian Hospital and the College of Ply
sicians and Surgeons TO equip their institutions
with the necessary apparatus for turning the
Rontgen rays to practical use. DR.. Pupn said
yesterday that he had no doubt Of the ultimate
success or bis experiments, and OF proving CON
clusively the value OF the new radiance in the
practice OF surgery.
THE ALLEGED BRAIN PHOTOGRAPH.
The opacity of human bone and OF the skull.
which has hitherto defed the penetrating power
even OF the wonderful rays. has been overcome,
according TO the statement Of medical prac-
ttioner In this city The report that this doctor
had photographed his own brain. of which he had
a pictorial representation In a morning paper. has
already been allHied TO In The Tribune. The
curiosity which was. on the day before manifested
BY various scientific and medical in the So
called discovery. developed yesterday into express
sions Of amused Incredibly. One well-known
physician said that the so-cailed representation
of the brain In the Illustration actually resembed
nothing he had ever seen on the surface In the
interior of the brain
EDIsONs LATEST EFFORTS
Thomas A. Edison yesterday made decided
progress in the line that he has marked out for
himself, that of working down the time exposure
Of the plates in the ray process He succeeded
in getting excellent results with ,en-minute
exposure, and fairly good with five minutes
test OF two minutes was also clearly defined. but
not clear had been hoped for.
Mr. Edison told Tribune reporter that he be-
neved he would get down to the instantaneous ex-
posure In time. This IL his AIM to reach
practical commercial results. The tubes he de-
cared, nearly perfect they DO