The sun. [volume] (New York [N.Y.]) 1833-1916, 1899-05-21

OnhmDoflhlnb principal secretary ana B0rd
salisbury's son-in-law. presided over the COM
mitteo. Its rerort says that no one disputes
the practlcability OF the project from a tech
meal point OF view. although the depth prob
ably. In places more than 1000 fathoms. is as
great a. that In which any cable has hitherto
been laid. The committee recommends that
the route should be from Vancouver via Fan
ming or PALMYRA Island. Fiji and Norfolk Isl
and. with branches from the last-named sta
tion TO Queensland aud New Zealand. There
would be a decided advantage in taking the
cable via Honolulu. but this would involve n
departure from the principle OF using only
British territory for landing stations. The
length OF the cable. allowing 10 per cent. for
slack. would be 1885 nautical miles. The ut
most speed at which II will be possible to send
a message Through from Canada to Australia
will be forty letters a minute. But messages
can be sent from both ends at the same time.
The total annual capacity Of the cable would
be 1920, 900 world. The India Rubber. Gutta
Peroha and Telegraph Works Company has
offered to lay tho whole cable for s1.517.0p0.
This includes the erection at each station OF a
suitable dwelling house and operating room.
with duplicate sets Of all proper instruments.
and also tho use Of two cable. repairing ships.
withthe cost OF maintaining them and the
cable for three years. The working expenses
are stimate at f22.0 600 a year. repairs at
f40.0O0 and the maintenance OF two repairing
vessels at ESQ. 900 q year. With interest at az
per cent. on a capital Of 81. 100000. the total
annual cost OF the cable would be f154.464.
Az to the revenue. II the existing rate to
Australia OF $1.15 a word is taken as q basis.
and the existing rate OF 81 cents from London
to Vancouver is maintained. the Pacific cable
would be able to charge rs cents a word. On
an estimate traffic OF 100000 words in 1894.
and allowing an In orease OF 10 per cent. Of
business In 1900. the cable would In It's first
year OF working earn f17S.457. giving a credit
balance OF f33.b50.
The British Governments conditional sub
sidy Of 100000 a year L.. Of course. no offer
at all. 1t stands out for half rates on all its
own messages and would only pay the subsidy
to make UP q deficit on the annual revenue
from tho cable. Moreover. It could always
take its subsidy out by an.abundance Of mes
sages from the Colonial ONCE. which would
actually make q saving on It's present outlay II
1t could get all It's dispatches carried at nalf
price for q payment that could never exceed
100000 q year and would gradually decrease
till it vanished the moment that general bust
ness made the cable self maintaining.
A new process OF color photography devised
by Mr.. William Frisse- Greene is beginning to
arouse interest. The method. which Is made
public to-day for the first time. makes II possi-
cS w suhS hSNSN AhhbhAD 80 - Se1NAS eae w
project them on to a screen in such a way that
the colors Of the original subject are repro
duced in all fidelity. 1t Is not pretended that
this is an invention In itself. but II is based on
novel ideas. The best known process here
that OF Mr.. F. f. Ives. an American while II
does not produce actual color photographs.
yet will throw a picture on a screen in natural
solors. A visitor who saw Mr.. Friese-Greene's
process at work in Chelsea this week vouches
for fha gapnipanaaa ~ fIa mathoda and the
quality OF the results.
A Photographic negative OF q scene or pio-
turs 10 taken by means Of , oamera, or photo
graphic apparatus through a transparent
material or medium bearing three or more
primary colors. The negatives thus obtained
will contain not only the several colors en-
ployed. but also all the varieties OF color
caused by tho blending Of the 50 colors. Then
by obtaining a transparency in the usual way
from this negative and projecting the image
from the transparency upon a screen by
means Of a lantern through a transparent
medium, colored and constituted similarly TO
the transparent medium employed in taking
the negative. the image appearing on the
screen Will show all the colors OF the original
scene or picturs. The novelty in Mr.. Friese-
Gresne's. method is the transparent medium
employed. This consists q a disk o: glass
composed Of differently colored sectors. In
Ihhihk a pioeoSi aphhS s|oei'os "a III w
ing a transparency obtained from such mega
tive. this disk is caused to revolvs rapidly in
front OF or behind tho ordinary lens of the TAX
ing or projecting apparatus. the colored parts
OF the disc moving successfully past the lens
during one and this same exposure.
One form Of disk used by Mr.. Friess. Greene
consists OF two circular glass plates divided
into three COMPARTMENTS. the space between
being filed with liquids Of differen. colors
I..afarnIJr h1,a nranp npI rAtN and 80 IiRa.
ent intensities. Care. OF course. 10 taken to
prevent the liquids from escaping while the
disks being whirled around. Instead Of max
ing .the.three sectors containing the three diff
ferently colored liquids of equal area, and vary
ing the active effect OF the exposure OF the col
ors by varying their intensities. Mr.. Frlsse-
Greene also employs liquids OF uniform inten-
sity OF color. and varies The exposure by vary
ing the areas OF the sectors. In such cases the
green sector should have about half the area OF
the red sector. and tho blue sector be very
much smaller than the green. The proper
r lions will depend to some extent upon the par
I ticular kind OF sensitive film employed, but
they will be chiefly regulated according to the
: length OF exposure required for photograph.
, ing the several colors. an important point beirg
that all the colors should have an equivalent
amount OF exposure. having regard to the fact
that blue requires much less exposure than
] green. and green less exposure :han red.
In another form OF disk colored liquids arr
. not employed instead. the disk Is composed o.
three differently colored sectors OF single
0 thicknesses Of glass and other Transparent,
material. and the sectors are made OF different
: areas corresponding 70 the requisite exposure.
= Of the respective colors. In projecting thu
Image upon the screen u similar disk to the
|, one employed in taking the negative Is used
! The disk may be rotated either by hand or by
Q an electo- motor, ana 1t Is not until Il goot
v speed has been attained that the colors will
> come out on the screen.
: Mr.. Friess- Greene does not pretend that his
0 Systen Ia perfect yet. The records OF the Brit
ish Patent Ufice fall to show that any invenso %
, has before conceived the idea OF varying the
n size Of the three color screens or Of rapidly
rotating the disk containing the screens be
4 fore or behind the negative. When the
" transparency taken behind the disk described
above is Viewed in the ordinary way on the
Q screen no colors are to be seen. II Is only
n when the color disk is set revolving behind the
transparenSy that he - c oil rs. appear; Tn