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Notices to Correspondents.
J. N. C. will see by this week's Number, that the line to which he refers is from Hamlet.
K. R. H. M.'s communication was marked for insertion before we received his Note.
W. F. We were quite unable to attend to your wishes this week.
Stupiditas. We have never known such failures to take place as you describe. In all probability you have not perfectly immersed your paper in the saline solution. Half a drachm of muriate of soda, and the same quantity of muriate of barytes and muriate of ammonia, dissolved in a quart of water, forms a very excellent application for the paper, previous to the use of the ammonio-nitrate.
H. Henderson. Any application applied to your window would in a great part obstruct the light. Brushing it over with starch might be tried.
B—z. Yes. Many of the very best pictures in the Photographic Exhibition in Bond Street, as we may probably take an opportunity of pointing out in some future notice of that interesting collection, are from collodion negatives.