In reply to the very sensible inquiry of SIMPLICITAS, there is an essential difference between the calotype of Talbot and the waxed-paper process, the picture in the first being almost entirely superficial, whilst in the latter it is much more in the body of the paper; this causes the modification of the treatment. A _tolerably-strong_ solution of (A_9O NO_5) nitrate of silver is required to decompose the (KI) iodide of potassium, with which the paper is _saturated_, in any reasonable time, but if this were allowed to dry on the surface, stains would be the inevitable result; therefore it is floated in distilled water, to remove this from the _surface_; and it seems to me that the keeping of the paper depends on the greater or less extent to which this surface-coating is removed. There can be no doubt that the paper would be far more sensitive, if used immediately, without the washing, simply blotting it off; but then the great advantage of the process would be lost, viz. its capability of being kept. WILLIAM PUMPHREY. _Camera for Out-door Operations._--I should be glad to see a clear description of a camera so constructed as to supersede the necessity for a dark room. Such a description has been promised by DR. DIAMOND (Vol. vi., p. 277.); and if he could be induced to furnish it at an early period, I at least, amongst the readers of "N. & Q.," should feel much additionally indebted to him. E. S. * * * * * "'TWAS ON THE MORN." (Vol. vi., p. 556.) This is a very celebrated Gloucestershire ballad, which though at one time popular, is, I believe, rarely heard now. I have before me an old and much mutilated broadside of it, which, at the conclusion, has the initials "L. & B." I presume the words are wanted, and therefore send them; and not knowing whether the tune has been published, will also forward it, if wished for by your querist. 1. "'Twas on the morn of sweet May-day, When Nature painted all things gay, Taught birds to sing, and lambs to play, And gild the meadows fair; Young Jockey, early in the morn, Arose and tript across the lawn; His Sunday clothes the youth put on, For Jenny had vow'd away to run With Jockey to the fair. For Jenny had vow'd away to run With Jockey to the fair. 2. The cheerful parish bells had rung, With eager steps he trudg'd along, While rosy garlands round him hung, Which shepherds us'd to wear; He tapt the window: 'Haste, my dear;' Jenny impatient cry'd, 'Who's there?' ''Tis I, my love, and no one near; Step gently down, you've nought to fear, With Jockey to the fair.' Step gently, &c. 3.