B. T. A. The line "England, with all thy faults I love thee still," is by Cowper (The Task, book ii.).
Rev. J. J. We fear some injustice was done—unintentionally, but fear also that it is now too late to remedy it.
Inquirer (Birmingham). Some of our correspondents have met with great success from Mr. Crookes' process; but we are bound to say that it has not been universal.
G. W. E. recommends that in immersing a collodion plate it should first be inserted horizontally, and then transversely in the nitrate of silver bath, as a sure means of avoiding spots.
He is informed that if the edges of his glass are roughed, it will greatly tend to the adhesion of the collodion. The nitrate of silver bath, used for exciting collodion plates, is not available for exciting albumenized paper or any other purpose.
H. C. C. 1. The addition of cyanide of potassium to the sensitive collodion not only prevents its decomposition, but appears to add to its general good qualities. 2. Protosulphate of iron mixed with your nitrate bath is quite fatal. 3. Good pictures are constantly taken when the temperature is below sixty; though there is no doubt all chemical action is quicker in warm weather.
B. (Manchester). See "N. & Q.," No. 205, October 1, 1853.
W. Beatson. There are difficulties in the way of such an exchange of photographic pictures, which are very difficult to overcome. At present we believe the Photographic Society, with the aid of an energetic Council, have been unable to effect this, even to a limited extent.
Erratum.—Vol. ix., p. 220. col. 1. line 9, for 1533-5 read 1633-5.
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