so Po.ji'Cr Process in Photography. 
[no. 1, NEW SERIES, 
that the Sun has done what he was unable to effect. For the glass 
plate of the printing frame becomes so hot as to transfer the wax 
from the negative to the positive, through the coagulated albumen. 
Having said all that appears to be necessary on the subject of 
unwaxed paper, I will add what may be necessary to enable the 
novice to use waxed paper. He will find at the outset that it is 
much more difficult to immerse waxed papers in the iodizing solu- 
tion, the difficulty is lessened when there is a good depth of solu- 
tion, I have also found that the papers are more easily immersed in 
a solution made with whey than in one prepared with water. In 
exciting waxed papers, float twice the time directed for unwaxed 
papers. They will require about five thirds the exposure, and ge- 
nerally, the development, fixing, and washing of waxed papers will 
require a longer time. With these exceptions the manipulation is 
the same as with plain papers. 
In conclusion I have only to add. that the method of manipulat- 
ing is that followed by Captain Tripe and Dr. Neill, which will 
recommend it more to your notice than anything I can say in its 
favour. They do not soak their papers so long in the iodizing so- 
lution as I recommend. It was an experiment with me, and the 
result having proved satisfactory, I of course direct you to do that 
which has succeeded in my hands. But I am not certain that such 
lecgthened immersions are necessary, though I am quite satisfied 
they are not injurious. The iodizing compound contains nothing 
new to Photography, but the proportions are different from any 
published formula, I believe. How much of its greater rapidity 
of action is due to that (or perhaps the longer immersion in the 
iodizing bath,) I am not prepared to offer an opinion, because 
neither my leisure nor circumstances permit me to enter into numer- 
ous experiments. But I know it is considerably quicker than any 
modification of the waxed-paper process that I have tried, it is 
.as quick as the Calotype, and I think is deserving of a more ex- 
tended trial by Indian Photographers than an Individual has the 
power to give it. It is doubtless capable of improvement, and the 
probability of this will increase with the number of hands that can 
be induced to give it a trial. 
