The Cambria freeman. [volume] (Ebensburg, Pa.) 1867-1938, 1891-05-15
EBENSBURG. PA. FRIDAY. MAY Is. 1891.

grandfather through tho MOTHER but
neither the mother nor any other mem
Der of the family is color blind. In
family of five, three sons and
two daughters. the three sons inherit
color-blindness through their father
and grandfather; while the two daugh-
ters, and indeed the whole of the fe-
males of this family, are free from color
defect"
The question may be fairly asked:
Does color blindness increase with IN
creasing age? There are some physical
defects which can be outgrown and
lost forever; but Mr.. Jabez Hogg says
of this very thing
"A few carefully recorded cases lead
me to think that age does aggravate the
defect OF color-blindness, "a II does GER
tain other defects of vision. 1t un-
doubtodly becomes more pronounced
as the near point of vision recedes- In
the case of Mr. D. II. C, who at the
early age of fourteen went to sea, and
who, five or six years afterward. con-
suited me before he applied for his GER
tiGcate Us third mate, / pronounced him
red-color blind; nevertheless, afterward
he obtained his certificates; and subse-
quently those of second and nrst mate.
But when, at the age of twenty six, he
applied for his masters certificate, ht
was unable to pass the color test A
this date l once more tested him foi
color, and on referring back 10 my
notes of an earlier date, came to the
conclusion that his color blindness haS
sensibly increased
Another was as follows: Capt
y consulted me for a disturbed
state of vision - tobacco anaurosis-
His color sense was also very i'm
perfect; but as he soon recovered saw
no more of him for nine or ten years,
when he one morning called upon me,
complaining of defective sight and an
inability to distinguish the ships light
He was then very uncertain about his
greens: darlx-Creens h called black and
darll-reds were simply warmer eolors
than green's. In short, he was color
blind Soon afterward he retired from
the service.
corroborative. III. j, lad ASe6
sixteen. myopic before going 70 sea,
was examined 1T an ophthalraic hspi-
tai and pronounced free from color
blindness On his return home, he
passed the color-test examination and
obtained his certificate. Four years
aiterward his father brought him to
ma. He was then complaining of his
inability 70 distinguish the color of the
ships signal lights, and he often missed
the ropes This he attributed TO his
short sight BE was unable to select
or sort the skeins of colored wool, in
short, he was completely color-blind-
recommended him not to go up for his
second examination His friends
thought otherwise. He was rejected,
and his certificate was indorsed color
blind This, of course, put stop to
his further career in the service. The
father of this patient was not color
blind: but he was unable TO say
whether his father or grandfather had
suffered from any defect of vision The
myopia must have been transmitted"
The statistics we have just presented
to our readers plainly prove that the
utmost caution must be exercised by
parents, railway officials and marine in
spectors before they allow their chill
drcn or their candidates to enter upon
4 line Of occupation for which by ma
ture they are wholly untitled. And the
public itself ought to lay to heart the
many facts revealed by Mr.. Jabez
uogg. 4 large percentage OF the pub
lie is every day travelling either by sea
or rail and il is absolutely necessary
that the utmost precaution should be
exercised in ascertaining the eompe-
tency of the men in charge for reading
Alright the colored signs and signals
which in their various and silent ways
predict safety, caution or danger.-N.
Y Ledger