The Houston daily post. [volume] (Houston, Tex.) 1886-1903, 1900-05-25

while IL the. plate liz oyer.,ir.
The pyrogall.c acid should asd more
the negative SLOWS Rno rnuch used
there should be more on ~ senow IA
soda used. If the NEGATIVE - suApn'ts
blue-'slack color zoo much s = olack|
soda has been used. Tho 49, s'pnlis
the negative Is generally thonr. eoios
faint tinge OF yellowish green 70 ID
Ut ia understood what acbion ~. WV Y
chemicals have on the film Aha u'lsfd
may be proceeded with. us'elo2l
Place the plate in the tmv !.
up. Grasp the tray with ~ nm 4
Take the developer in the risht 'S ~. Al
now ~ over the plate quickly. IA -!
THIS roughly, as II would cause i. ~
which would SETTLE on the film Az y
transparent spots. 1t is rafha. a "a
matter TO understand Just when - : q
should first begin TO show The ina" ess
stiil harder one to tell when ii q am sa9
However, TO make things az sinnis :. wv
sible, 1t IS suggested that when J. = n
has been in the developer from ~ n "
four to thirty seconds the irnaps .s1]
begin to show in the strongest hish W. NJ.
This Is what may be callad 49,
timed negative. If, however H. n
lights fail to sppear inside thirtv' w v
IL may be considered an underiaa ~ u
and should he itrated accordingly. N
a few drops OF the carbonate Of M WI
from the stock solution bottle sbo,rs
added to the developer. II the ula,s I,
too much underlined this may sutf.s \
this, however, fails t., bring n alI 7
make up a fresh developer, using m
twice the amount of water and ANA, n
third more OF the carbonate az pota.,,'
Pour this over the plate and cov,.
tray and let it sit for some uims MI
the shadows begin to show the dets, y
off this solution and pour on normal IN
oper and finish the development H.
other hand the plate shows In less n
twenty-four seconds the plate sbo,,S
treated tor overtime. II 1t is only ,llSs|
overtime, say It shows In about eIrSt1
or twenty seconds. a few drops Of py|
gallo acid solution VIII usually msss|
all' right. III 1t should be Considers
overturned, say 1T should show IN ,ss 4
onds, the propert treatment would Il
use a few drops Of 10 per cent solriI
OF bromide of potassium" This n
ton is made by taking one ounce Of N
nlide OF potassium and den ounces
water, which make n 20 per cent sdutij
If the plate is overturned add two or al
drops of this and it will heM maN}
But il too much is added it will only M
bad matters worse by causing ansl
trouble which is n clogging Of the N
tones and high lights. Therefore Ne n
careful how 1t is added. For convened
however, the normally timed plsts will
dealt with here.
After the plate is flowed with the
veloper and it has shown In say twe}
six seconds. the next thing that Will 4
zle the novice is when to take the d
out Of THE developer. One way 10 ID
when a plate has developed far eno
and one that has proved satisfactory, \
develop until the detail is all out D. |
deepest shadow in the picture, when
amined by holding the negative up to .
developing light and looking through
from the back, Another way Is %
velop until the high lights show tire
on the back OF the plate when looked
as one would when looking at a pcsnr@
when reading letter This is one " /
UlOSL uliDcuil UuIuES 10 uuutiotahn
can only be acquired by constant pratl
After the plate is developed, take Il 4
the developer and rinse for al least
minute under the tap or pour several
pers of water over it. Then place
the fixing hath This fixing ban
made of hydrosuplhite of soda and wa:s
test IS degrees by the hydrometer
the hyposulphite Of soda Is cheap Il
not cost very much to make Z fresn
each lot of plates and this win % =
to be the most satisfactory In rs res'
The plate should remain in this ban
aIbout five minutes after all the creamy
pearance has left She back Of ne
DO not expose the plate to white IGN
til after all this creamy appearanse
disappeared, rs It will cause the neg
10 have a misty or logged shadows
taken from the fixing bath u sAeas
washed fer at least thirty MINUTES
the tsn or given about twelve o.
change OF fresh water of FIVE minutes
After this washing the surface sasas
"mopped" off with a wet TUT o. s,su
cotton TO remove any sand or guy
may have been left by the water.
the negative is ready to hang ug aua
II should ne set or hung IN q 81!
and. If possible, In cool plaes, =
helps it to dry smoother and gives 7
firm surface.