I must, however, confess that I have not met with any portion of "the discussion about the nature of Robin Hood," excepting that contained in Ritson's Notes and Hunter's Tract, and that the evidence adduced in the latter publication, in support of the tradition handed down to us in the ballad entitled _A Lyttel Geste of Robyn Hode_, seems to me to satisfactorily show that "the Robin Hood of romantic tradition really existed in England in the time of Edward II." J. LEWELYN CURTIS. * * * * * PHOTOGRAPHIC NOTES AND QUERIES. _Originator of Collodion Process_ (Vol. vii., pp. 47. 92. 116.).--The fairest way of deciding M. Le Gray's claims would be, to quote what he really says. Willat's pamphlet, published in 1850, entitled _A Practical Treatise, &c._, by Gustave Le Gray, translated by Thomas Cousins, ends with an appendix, which runs thus: "I have just discovered a process upon glass by hydrofluoric ether, the fluoride of potassium, and soda dissolved in alcohol 40°, mixed with sulphuric ether, and afterwards saturated with collodion; I afterwards re-act with aceto-nitrate of silver, and thus obtain proofs in the camera in five seconds in the shade. I develope the image by a very weak solution of sulphate of iron, and fix with hyposulphite of soda. I hope by this process to arrive at great rapidity. Ammonia and bromide of potassium give great variations of promptitude. As soon as my experiments are complete I will publish the result in an appendix. This application upon glass is very easy: the same agents employed with albumen and dextrine, give also excellent results and very quick. I have also experimented with a mucilage produced by a fucus, a kind of sea-weed, which promises future success. I hope by some of these means to succeed in taking portraits in three or four seconds." I know not at what time of the year the pamphlet came out, nor whether the appendix was subsequently added; but any copy containing it was bought about the middle of August, 1850. THOS. D. EATON. [We have much pleasure in inserting this communication, as it may be the means of drawing fresh attention to the other substances mentioned by Le Gray; for we are strongly of opinion that, notwithstanding the advantages of collodion, there are other _media_ which may prove preferable.--ED.]