_Simplicity of Calotype Process._--The session of the Photographic Society
was commenced with a paper from our original correspondent, DR. DIAMOND,
under the above title. Our journal having led to such facilities of
question and answer, has induced many of our readers to ask upon several
points additional instructions, some of which we have ourselves thought
might have been made more clear and having written to DR. DIAMOND he has
promised us a revised copy for our next Number. Replying to some of our
Querists, he says, "The plain photographic facts are correct; but I wrote
the paper on the morning of the day on which the Society met, and was not
aware it was to be printed in the _Journal_ until I received my copy."
_Albumenized Paper._--As my only object writing on this subject was to
communicate to others the plan which _I_ had found _in practice_ most
successful, I think it necessary to correct some points of misapprehension
which it is evident your correspondent K. N. M. has fallen into, Vol.
viii., p. 501.
In the process I recommended, the paper, if cockled up, readily becomes
flat and even if kept in a portfolio or any similar receptacle; and as I
_never float_ my paper to sensitize it, I have not the inconvenience of the
silver solution becoming spoiled by particles of the albumen. The 100
grains to the ounce for the solution I do not find more extravagant when
applied, as I have indicated, with a glass rod, than one of 30 grains to
the ounce when the paper is floated, because in the former case I use only
just enough to cover the paper, viz. forty-five minims to a half-sheet of
{549} Canson's paper, and there is no loss from any portion adhering to the
dishes, evaporation, or filtering. This is far more than would be imagined
when only a sheet or two of paper is required at one time. Lastly, with
regard to the _strokes_ being visible after printing the positive, I do not
find them so in general, though occasionally such a thing does happen when
sufficient care has not been taken in the preparation; but I find striae
quite as visible on two positives prepared by DR. DIAMOND himself, which he
kindly gave me: however, I will forward a sample of my paper for your
judgment, and also a portion for K. N. M. if he will take the trouble of
trying the same.