_Colouring Collodion Portraits._--I shall be obliged if any brother
photographer will kindly inform me, through the medium of "N. & Q.," the
best method of colouring collodion portraits and views in a style
similar to the hyalotypes shown at the Great Exhibition.
We country photographers are much indebted to DR. DIAMOND for the
valuable information we have obtained through his excellent papers in
"N. & Q.," and perceiving he is shortly about to give us the benefit of
his experience in a compact form, under the modest title of
_Photographic Notes_, I suggest that, if one of his Notes should contain
the best method of colouring collodion proofs, so as to render them
applicable for dissolving views, &c., he will be conferring a benefit on
many of your subscribers; and, as one of your oldest, allow me to
subscribe myself