244 
(8) ALUM AND HYPO FIXING BATH. 
Dissolve common alum ......1 part. 
Te Wwalter 2.553, teach mean eee 40 parts. 
Then add soda sulphite 1 part, and 
when dissolved - 
Add hypo 
(9) CHROME ALUM AND HYPO FIXING BATH. 
Some workers prefer to use chrome 
alum instead of the common (potash) 
alum. ~ 
Chrome: sal tint nas ene Lb pant 
Sodassilphites. ee soe cet Se 5 parts 
ELV ponies pees cer ae aes 20 parts 
Crerieesa Cid gist yee ental fae 6 parts 
Fait GIES orcas iia tenn ahem areaeent.c 100 parts. 
Dissolve the several ingredients in the 
water in the order given. 
(10) CHROME ALUM AND HYPO BATH. 
Here is a slight modification of the last 
formule. 
Chrome alum.. 4 parts, say 1 dram. 
Soda sulphite .... 16 parts, say % oz. 
Le has on ee 128 parts, say 8 oz. 
4 sane ee ete 512; parts, say, 32 10z. 
Sulphuric acid.. 1 part, say Io drops. 
In all three forms, 8, 9, and Io, of the 
alum and hypo bath the mixing should 
be done some time before use, well stirred 
and the clear part filtered or carefully de- 
canted for use only. 
(11) With a view to preventing decoim- 
position of the alum and hypo mixtures, 
M. Mercier has suggested the addition of 
soda citrate. It may be well to quote his 
formula, as it is said to keep well, and to 
yield brilliant negatives. 
Citrate@fsOdd wets (aii oes I part 
‘hablerisalt 4 aera. bec. steals ore 4 parts 
Common alum: feta en. 4 parts 
Pot. metabisulphite ........ 4 parts 
PR Vai Hiei ok) oie Lie ow deere ate 40 parts 
WEEE ehh cee ee oh cate cette 200 parts 

AGAIN THE COMBINED BATH. 
This process of photography, so easy for 
the amateur to work, has been the subject 
of a great deal of discussion and is con- 
sidered by many as a pretty good thing 
to stay away from. I am inclined to think 
the combined bath is all right, provided 
the user will exercise good judgment and 
a little common- sense. To explain: One 
grain of gold will tone only 231 square 
inches of paper; nearly every combined bath 
contains sugar of lead, and when one at- 
tempts to tone more square inches than as 
mentioned above, lead tones are the result, 
and these are not permanent; it is obvious 
that toning should be done with gold if per- 
manency is desired. 
I have used a combined bath which has 
yielded permanent tones, some of my prints 
having been exposed to the direct light for 
over 2 years without a sign of fading, but 
I was not stingy with my gold. My for- 
mula is: 
® 
— 
=... 
RECREATION. 
NV AGEL Fc oes Petes ne 20 ounces, 
ELypolt3 5. sip ed ete Be 4 ounces. 
mucetate leadinas aan 30 grains. 
Golds 7s eee eereen I grain. 
Prints should first be washed in several 
changes of water to eliminate free nitrate; © 
then toned in above to desired color; then 
fixed in an extra fixing bath of 
Water 
Hypo 
for about 5 minutes and well washed in a 
dozen changes of running water or for 
about an hour. The above bath will tone 
I2 4 x 5 prints nicely. If a greater num- 
ber is desired, add more gold, always work- 
ing on the above rule ‘“‘one grain of gold 
to 23I square inches of prints.” 
e@eceeveeevereeeeee ee 
NURSE A oidalob Emp asc 5 ounces. 
A:CetiCv acid Si; ja Aas oe I ounce. 
Alcohol: S6cic Re pees I ounce. 
Add dextrine, a little at a time, thor- 
oughly stirring, until it reaches the con- 
sistency of thick molasses. 
Chas. Brunner, Easton, Pa. 

Do any of your readers use a stereo- 
scopic camera? I have one which I 
bought last fall and in the book of in- 
struction the makers say a space of &% of 
an inch should be left between the 2 prints 
when transposing. What is the object of 
this? I have a large number of stered- 
graphs that I have received in exchange 
for some of mine and find that few of them 
leave this space. Nor can I detect any dif- 
ference in the appearance of the pictures 
when viewed through the stereoscope, as 
far as perspective or solidity is concerned. 
If any of your readers are using stereo- 
scopic cameras I should like to hear from 
them in regard to this matter and would 
like to exchange prints with them. Have 
any of your readers ever used the “Chau- 
tauqua”’ plates for snapshot work, with a 
hand camera? If so, with what results? 
C. T. Metzger, Union City, Pa. 

Some people in England who rent bi- 
cycles have hit upon a clever plan, origin- 
ally started to protect them from theft, 
but now extensively practiced to gain cus- 
tomers. Upon hiring a wheel the party is 
photographed. A small picture on Velox 
can be made while the wheel is out and 
the party is presented with it on his or her 
return. It suits everybody and those who 
do it get the trade. Might be a good 
note for some enterprising American deal- 
er. It don’t (or need not) cost but a 
trifle, and naturally induces much trade. 

I have 4 x 5 and 5 x 7 prints of Omaha 
exposition, Bishop Hill Colony, etc., which 
I should like to exchange with amateurs. 
V. J. Root, Galva, Henry Co., Ill. 


