352 



NOTES AND QUERIES. 



[No. 261. 



where, if a male branch of the Palaeolopfi were still ia 

 existence, the Greeks would equip a ship for the illus- 

 trious exile, and proclaim him their lawful sovereign." 



Mr. Bradfield states, that the vault in which 

 Palseologus was interred was opened some years 

 before the time he wrote, in order to remove the 

 bodies to a new-burial ground, when his remains 

 were discovered — 



" In a large leadeii cofRn, with the feet pointing towards 

 the East, the usual mode of burying amongst the Greeks. 

 It was found to contain the perfect skeleton ; and the 

 grave was traditionally known to have been that of ' the 

 Greek Prince from Cornwall.' " 



J. Emerson Tennkxt. 



The last male of this illustrious name lies buried 

 at the church of the parish of St. John, in the 

 island of Barbadoes ; but his descendants in the 

 female line are still to be found in highly re- 

 spectable circles. 



I know a gentleman whose grandmother claimed 

 descent from the Paljeologus alluded to in " N. & 

 Q.," Yol. viii., p. 572. ; and who, singularly enough, 

 is married to a cousin of the present Empress of 

 the French. Cincinnatus. 



Granada. 



PHOTOGRAPHIC CORRESPONBENCE. 



Ohservation Instrument for Photographers. — At a re- 

 cent meeting of the Liverpool Photographic Society, Mr. 

 Sheridan exhibited a portable little instrument, of simple 

 construction, for enabling a photographic operator to take 

 his observations with aecuracj'. It is the invention of 

 Mr. Grub, of the Bank of Ireland, and is a small conical- 

 shaped box, open at either end, made of card-board, 

 which folds together so as to be easily carried in the 

 pocket. In the Liverpool Photographic Journal is a 

 diagram of the instrument, accompanied by the following 

 description of the mode of constructing one in such a way 

 that, by looking through the smaller end, the larger one 

 will be found to expose just as much of the view as the 

 ground glass of the camera would take in if placed in the 

 same spot, provided of course the instrument be made on 

 a proper scale. After observing that to mathematicians 

 there is a known means of calculating the size and form 

 of the box with the utmost accuracy, by knowing the 

 focal length of the lens employed, and the exact dimension 

 of the plate or paper to be covered, Mr. Sheridan stated 

 that for all practii-al purposes the following rule-of- thumb 

 way of doing it will be found to answer very well. 



" Thus, from a base line you describe a portion of a 

 semicircle, whose radius on a given scale is equal to the 

 focal length of your camera. Take, for instance, the one 

 I generally use, which is IG inches focus, and taking a 

 picture 8| in. by 7J in., mark off on the circle a 8§ in. 

 from the point where the circle cuts the base line, then 

 B 7J in., and again a 8J in., and lastly n 1\ in. ; thus a 

 and A correspond to the top and bottom of the largest end 

 of the instrument, and b and b to the sides: from these 

 points lines are drawn to the points on which the limb of 

 the compass rested in describing the semicircle; and 

 from each of these lines, where they touch the circle, 

 draw a straight line so as to cut off the curvature. Now 

 describe an inner circle from the same point as the first, 

 a little less than a quarter the radius of the other, say 



Zh in. (or on a corresponding scale), and draw straight 

 lines as before from point to point where the circle cuts 

 them, and the figure is finished. You have now only t» 

 cut partially the card-board down the radiating lines, so 

 as to enable you to bend it into the form of a conical box ; 

 then, cutting off the curvature at top and bottom, and 

 lining it with black paper or linen, so as to allow of its 

 being pressed flat for the purpose of occupying but little 

 space, j'our instrument is complete. To prove its ac- 

 curacy, place your camera in any convenient position, 

 and observe the objects that are just visible on either 

 extreme of your ground glass. Try your instrument from 

 the same place, and if it takes in the same object it is 

 quite correct ; if, however, it docs not take in so much, 

 yoti must by little and little increase the size of the small 

 end by cutting more off it, till the objects do ai)pear. 

 The instrument may be made on any scale ; that of J in. 

 to the inch is a very convenient one ; and it is recom- 

 mended that the aperture of the small end should not be 

 less than 1 in., so as not to contract the pupil of the ej'e 

 or cause you to see along the outer side of the instru- 

 ment." 



Buckle's Brush. — I find that one correspondent in 

 " N. & Q." has insinuated that Dk. Diasioxd may be 

 " a bungler," and another has noticed Him as one that 

 "had taken upon himself," forsooth, because the Doctor 

 had hinted an opinion as to the merits, not of another 

 photographer, but of a small implement, which is used by 

 some practitioners and rejected by others. These corre- 

 spondents have had no hesitation in giving their own 

 opinion of the said implement at great length, and with 

 perfect freedom. So far they had a right to go, and no 

 farther. It is not at all likely that Dr. Diamond will 

 condescend to notice the discourtesy with which he has 

 been treated ; but if persons are to be lectured for saying 

 what thev think of things, the art of photography (if not 

 " N. & Q'.") is likely to be a loser. T. D." Eatok. 



Norwich. 



Hejiltctf to rPCnnr ^uer(t)S. 



Rules of Precedence (Vol. x., p. 207.). — At the 

 coronations of George III., William IV., and our 

 present most gracious Sovereign, the dowager 

 peeresses were placed in the respective cere- 

 monials with precedence above that of the wives 

 respectively of the existing peers of the same 

 titles. Thos. W. King, York Herald. 



[The receipt of this reply from so good an authority as 

 York Herald, has led us to make some farther investi- 

 gation into the question, and we find that he is right and 

 we were wrong. In the same note we intended to speak 

 of the sons of the reigning sovereign sitting "next to or 

 beside " the cloth of estate, and not under, as, in the 

 pressure with which such notes are sometimes written,, 

 we have inadvertently expressed ourselves. ] 



" The devil hath not;' Sfc. (Vol. x., p. 288.). — In 

 reply to your correspondent M -.\. L., I beg to 

 acquaint her that the quotation — 



« The devil hath not, in all his quiver's choice. 

 An arrow for the heart like a sweet voice" — 



is from Byron. (Vide Don Juan, canto xr. 

 stanza 13.) Newbdkiensis. 



[We are also indebted to C. F. and other correspondents 

 for similar replies.] 



