Will An Old F.S.A., F.R.S., F.S.A., who writes to us that the "Eyre drawings are authentic," oblige us with his name? It is obvious that anonymous testimony can have little weight in such a case, when opposed to that of known and competent authorities.

Working Man will find the English equivalents for French weights and measures, and much of the information he desires, in Walich's Popular Tables.

Bb. (Bradford) will probably find in the Journal of a Naturalist, White's Selborne, and the valuable series of works illustrative of the Natural History of England, published by Van Voorst of Paternoster Row, the materials of which he stands in need, and references to other authorities.

C. R. will find scattered through our Volumes many modern instances of the mode of discovering the drowned, to which his communication refers.

Abhba. Our Correspondent should procure a valuable tract, entitled "An Argument for the Greek Origin of the Monogram IHS," published by the Cambridge Camden Society (Masters), which clearly shows that this symbol is formed out of the first two and the last letter of the Greek word ΙΗΣΟΥΣ.

P. H. F. The communication forwarded on "Lines attributed to Hudibras," will be found in our 1st Volume, p. 210.

F. T. The Weekly Pacquet and the Popish Courant is one and the same periodical, the latter being merely an appendix to the former, and printed continuously, as shown by the running paginal figures; so that when Chief Justice Scroggs prohibited the publication of the former, he at the same time suppressed the latter.

A Beginner. We again repeat that we cannot point out particular warehouses for the purchase of photographic materials. Our advertising columns will show where they are to be purchased at every variety of price.

C. K. P. (Newport). From the specimen forwarded, we doubt whether the paper is Turner's; if it is, it is not his desirable make. The negative it is evident, from its redness and want of gradation of tint throughout, has been far too long exposed. We have seen the brown spots complained of occur when the paper has been too long excited before use.

E. Y. (Rochester). It is probable that the spot of which you complain is from light reflected from the bottom of the camera, not from the interior of the lens. If so, the application of a piece of black velvet would remedy this. As the spot is always is one place, it must depend upon light reflected from some one spot.